Iridium is a chemical element with atomic number 77 which means there are 77 protons and 77 electrons in the atomic structure. Radium is a chemical element with atomic number 88 which means there are 88 protons and 88 electrons in the atomic structure. As the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine. Elemental sulfur is a bright yellow crystalline solid at room temperature. In writing the electron configuration for Argon the first two electrons will go in the 1s orbital. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Chromium is a steely-grey, lustrous, hard and brittle metal4 which takes a high polish, resists tarnishing, and has a high melting point. Main purpose of this project is to help the public learn some interesting and important information about chemical elements, ionizing radiation, thermal engineering, reactor physics and nuclear energy. Gold is a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal. Discoverer: Corson, Dale R. and Mackenzie, K. R. The actinide or actinoid series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium through lawrencium. The electronic configuration of each element is decided by the Aufbau principle which … The chemical symbol for Einsteinium is Es. Europium is a moderately hard, silvery metal which readily oxidizes in air and water. We use cookies to ensure that we give you the best experience on our website. Sodium is a chemical element with atomic number 11 which means there are 11 protons and 11 electrons in the atomic structure. For example, silicon has nine possible integer oxidation states from −4 to +4, but only -4, 0 and +4 are common oxidation states. Hence, the configuration for this cation is: The chemical symbol for Francium is Fr. Some are hard to memorise (or predict), so what is the electron configuration of an atom of Cs? Pure germanium is a semiconductor with an appearance similar to elemental silicon. Francium is an alkali metal, that has one valence electron. Ruthenium is a rare transition metal belonging to the platinum group of the periodic table. Carbon is one of the few elements known since antiquity. By mass, aluminium makes up about 8% of the Earth’s crust; it is the third most abundant element after oxygen and silicon and the most abundant metal in the crust, though it is less common in the mantle below. At 0.099%, phosphorus is the most abundant pnictogen in the Earth’s crust. It is fairly soft and slowly tarnishes in air. Although neodymium is classed as a rare earth, it is a fairly common element. 1s22s22p63s23pº O C. 1822s22p63s23p4s23d2 O D. 1s22s22p63s23p63d3 O E. None of the above . Neodymium is a soft silvery metal that tarnishes in air. Gold is a chemical element with atomic number 79 which means there are 79 protons and 79 electrons in the atomic structure. It is the fifth most abundant element in Earth’s crust and the third most abundant metal, after iron and aluminium. The chemical symbol for Tungsten is W. Tungsten is a rare metal found naturally on Earth almost exclusively in chemical compounds. The p orbital can hold up to six electrons. Platinum is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. The mention of names of specific companies or products does not imply any intention to infringe their proprietary rights. Neptunium metal is silvery and tarnishes when exposed to air. Strontium. If you want to get in touch with us, please do not hesitate to contact us via e-mail: Discoverer: Ramsey, Sir William and Cleve, Per Teodor. The chemical symbol for Beryllium is Be. The electron configuration for scandium is {eq}1s^2 2s^2 2p^6 3s^2 3p^6 3d^1 4s^2 {/eq}. Palladium is a chemical element with atomic number 46 which means there are 46 protons and 46 electrons in the atomic structure. It has remarkable resistance to corrosion, even at high temperatures, and is therefore considered a noble metal. It is the heaviest element that can be formed by neutron bombardment of lighter elements, and hence the last element that can be prepared in macroscopic quantities. Thorium is a chemical element with atomic number 90 which means there are 90 protons and 90 electrons in the atomic structure. The chemical symbol for Terbium is Tb. Tantalum is a chemical element with atomic number 73 which means there are 73 protons and 73 electrons in the atomic structure. The chemical symbol for Calcium is Ca. The chemical symbol for Radon is Rn. Its properties are thus intermediate between those of chlorine and iodine. The metal is found in the Earth’s crust in the pure, free elemental form (“native silver”), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite. The arrangement of electrons in the orbitals of an atom is called the electron configuration of the atom. Discoverer: Scientists at Dubna, Russia (1964)/Albert Ghiorso et. Iodine is the least abundant of the stable halogens, being the sixty-first most abundant element. Protactinium is a chemical element with atomic number 91 which means there are 91 protons and 91 electrons in the atomic structure. Silver is a soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. The chemical properties of the atom are determined by the number of protons, in fact, by number and arrangement of electrons. The chemical symbol for Promethium is Pm. Iodine is a chemical element with atomic number 53 which means there are 53 protons and 53 electrons in the atomic structure. Gadolinium is a chemical element with atomic number 64 which means there are 64 protons and 64 electrons in the atomic structure. Niobium is a soft, grey, ductile transition metal, often found in the minerals pyrochlore (the main commercial source for niobium) and columbite. In nuclear industry gadolinium is commonly used as a neutron absorber due to very high neutron absorbtion cross-section of two isotopes 155Gd and 157Gd. The chemical symbol for Neon is Ne. Being a typical member of the lanthanide series, europium usually assumes the oxidation state +3. Oxidation state 0 occurs for all elements – it is simply the element in its elemental form. Indium is a chemical element with atomic number 49 which means there are 49 protons and 49 electrons in the atomic structure. The chemical symbol for Samarium is Sm. The chemical symbol for Chlorine is Cl. Indium is a post-transition metal that makes up 0.21 parts per million of the Earth’s crust. Nickel belongs to the transition metals and is hard and ductile. Yttrium is a chemical element with atomic number 39 which means there are 39 protons and 39 electrons in the atomic structure. Very soft and malleable, indium has a melting point higher than sodium and gallium, but lower than lithium and tin. The most probable fission fragment masses are around mass 95 (Krypton) and 137 (Barium). Gelson Luz is a Mechanical Engineer, expert in welding and passionate about materials. 1) You may use almost everything for non-commercial and educational use. Polonium is a chemical element with atomic number 84 which means there are 84 protons and 84 electrons in the atomic structure. The chemical symbol for Copper is Cu. Tellurium is a chemical element with atomic number 52 which means there are 52 protons and 52 electrons in the atomic structure. Chemically, sulfur reacts with all elements except for gold, platinum, iridium, tellurium, and the noble gases. Entire website is based on our own personal perspectives, and do not represent the views of any company of nuclear industry. Neptunium is the first transuranic element. The next six electrons will go in the 2p orbital. The chemical symbol for Dysprosium is Dy. We have also distinguish between the possible and common oxidation states of every element. The isotopes of scandium range from 36 Sc to 60 Sc. Uranium is a silvery-white metal in the actinide series of the periodic table. A colorless, odorless, tasteless noble gas, krypton occurs in trace amounts in the atmosphere and is often used with other rare gases in fluorescent lamps. Lutetium is a silvery white metal, which resists corrosion in dry air, but not in moist air. We'll put six in the 2p orbital and then put the next two electrons in the 3s. Lead has the highest atomic number of any stable element and concludes three major decay chains of heavier elements. Antimony is a lustrous gray metalloid, it is found in nature mainly as the sulfide mineral stibnite. The chemical symbol for Nickel is Ni. The chemical symbol for Mercury is Hg. All of its isotopes are radioactive. The bulk properties of astatine are not known with any certainty. Cerium is a soft, ductile and silvery-white metal that tarnishes when exposed to air, and it is soft enough to be cut with a knife. Zirconium is a lustrous, grey-white, strong transition metal that resembles hafnium and, to a lesser extent, titanium. The chemical symbol for Sodium is Na. Despite its high price and rarity, thulium is used as the radiation source in portable X-ray devices. Home; Czech version; Table; Periodic table » Strontium » Electron configuration. Technetium is a chemical element with atomic number 43 which means there are 43 protons and 43 electrons in the atomic structure. Chromium is a chemical element with atomic number 24 which means there are 24 protons and 24 electrons in the atomic structure. Uranium is weakly radioactive because all isotopes of uranium are unstable, with half-lives varying between 159,200 years and 4.5 billion years. Approximately 60–70% of thallium production is used in the electronics industry. The chemical symbol for Zirconium is Zr. Radon is a radioactive, colorless, odorless, tasteless noble gas. Palladium, platinum, rhodium, ruthenium, iridium and osmium form a group of elements referred to as the platinum group metals (PGMs). Silicon is a hard and brittle crystalline solid with a blue-grey metallic lustre, it is a tetravalent metalloid and semiconductor. It is also sometimes considered the first element of the 6th-period transition metals and is traditionally counted among the rare earth elements. The chemical symbol for Nobelium is No. Osmium is the densest naturally occurring element, with a density of 22.59 g/cm3. Titanium is resistant to corrosion in sea water, aqua regia, and chlorine. Neodymium is a chemical element with atomic number 60 which means there are 60 protons and 60 electrons in the atomic structure. Copper is a chemical element with atomic number 29 which means there are 29 protons and 29 electrons in the atomic structure. The chemical symbol for Erbium is Er. Xenon is a colorless, dense, odorless noble gas found in the Earth’s atmosphere in trace amounts. This equilibrium also known as “samarium 149 reservoir”, since all of this promethium must undergo a decay to samarium. The chemical symbol for Carbon is C. It is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds. Its abundance in rocky planets like Earth is due to its abundant production by fusion in high-mass stars. The chemical symbol for Astatine is At. Liquid nitrogen (made by distilling liquid air) boils at 77.4 kelvins (−195.8°C) and is used as a coolant. Lanthanoids comprise the 15 metallic chemical elements with atomic numbers 57 through 71, from lanthanum through lutetium. Ruthenium is a chemical element with atomic number 44 which means there are 44 protons and 44 electrons in the atomic structure. To write the configuration for the Titanium ions, first we need to write the electron configuration for just Titanium (Ti). Potassium is a chemical element with atomic number 19 which means there are 19 protons and 19 electrons in the atomic structure. Bismuth is a brittle metal with a silvery white color when freshly produced, but surface oxidation can give it a pink tinge. The name xenon for this gas comes from the Greek word ξένον [xenon], neuter singular form of ξένος [xenos], meaning ‘foreign(er)’, ‘strange(r)’, or ‘guest’. Einsteinium is a chemical element with atomic number 99 which means there are 99 protons and 99 electrons in the atomic structure. A silvery-white metallic d-block element, it has historically been classified as a rare-earth element, together with yttrium and the lanthanides. The name samarium is after the mineral samarskite from which it was isolated. The electron configuration is the distribution of electrons of an atom or molecule (or other physical structure) in atomic or molecular orbitals. In nuclear industry cadmium is commonly used as a thermal neutron absorber due to very high neutron absorption cross-section of 113Cd. Maybe add your school logo, work team or anything else to maker your paper look cool? Cerium is a chemical element with atomic number 58 which means there are 58 protons and 58 electrons in the atomic structure. So, zinc's electron configuration written in shorthand is [Ar]4s2 3d10. Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the density of air. 2.3).Elements are classified into “blocks” according to the subshell that is being “filled” as the atomic number increases. The chemical symbol for Scandium is Sc. It is occasionally found in native form as elemental crystals. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table. The ninth member of the lanthanide series, terbium is a fairly electropositive metal that reacts with water, evolving hydrogen gas. Lutetium is the last element in the lanthanide series, and it is traditionally counted among the rare earths. Uranium is a chemical element with atomic number 92 which means there are 92 protons and 92 electrons in the atomic structure. Because of this, the first two rows of the periodic table are labeled the s block. Barium is a chemical element with atomic number 56 which means there are 56 protons and 56 electrons in the atomic structure. Berkelium is a member of the actinide and transuranium element series. Germanium is a chemical element with atomic number 32 which means there are 32 protons and 32 electrons in the atomic structure. Argon is mostly used as an inert shielding gas in welding and other high-temperature industrial processes where ordinarily unreactive substances become reactive; for example, an argon atmosphere is used in graphite electric furnaces to prevent the graphite from burning. Tellurium is chemically related to selenium and sulfur. Actinium is a soft, silvery-white radioactive metal. Thallium is a chemical element with atomic number 81 which means there are 81 protons and 81 electrons in the atomic structure. Argon is a chemical element with atomic number 18 which means there are 18 protons and 18 electrons in the atomic structure. Oxygen is a chemical element with atomic number 8 which means there are 8 protons and 8 electrons in the atomic structure. Neptunium is a chemical element with atomic number 93 which means there are 93 protons and 93 electrons in the atomic structure. The chemical symbol for Scandium is Sc. Praseodymium is the third member of the lanthanide series and is traditionally considered to be one of the rare-earth metals. Significant concentrations of boron occur on the Earth in compounds known as the borate minerals. Similarly, adding electrons results in a negative oxidation state. The chemical symbol for Actinium is Ac. Arsenic occurs in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal. For {eq}\rm Sc^{3+} {/eq}, three electrons are lost. Hafnium’s large neutron capture cross-section makes it a good material for neutron absorption in control rods in nuclear power plants, but at the same time requires that it be removed from the neutron-transparent corrosion-resistant zirconium alloys used in nuclear reactors. It readily forms hard, stable carbides in alloys, and for this reason most of world production of the element (about 80%) is used in steel alloys, including high-strength alloys and superalloys. Plutonium is an actinide metal of silvery-gray appearance that tarnishes when exposed to air, and forms a dull coating when oxidized. The chemical symbol for Polonium is Po. ↑↓. 1s2 2s2 2p6 3s2 3p6 4s2 3d1 is the electron configuration for the element Scandium (Sc). The chemical symbol for Gallium is Ga. Gallium has similarities to the other metals of the group, aluminium, indium, and thallium. The chemical symbol for Krypton is Kr. There are over 100 different borate minerals, but the most common are: borax, kernite, ulexite etc. Commercially, thallium is produced as a byproduct from refining of heavy metal sulfide ores. For example, write the electron configuration of scandium, Sc: 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 1. The chemical symbol for Iron is Fe. Technetium is the lightest element whose isotopes are all radioactive; none are stable. The chemical symbol for Xenon is Xe. Cerium is also traditionally considered one of the rare-earth elements. Lutetium is a chemical element with atomic number 71 which means there are 71 protons and 71 electrons in the atomic structure. Thorium is moderately hard, malleable, and has a high melting point. Electron configuration was first conceived under the Bohr model of the atom, and it is still common to speak of shells and subshells despite the advances in understanding of the quantum-mechanical nature of electrons.. An electron shell is the set of allowed states that share the same principal quantum number, n (the number before the letter in the orbital label), that electrons may occupy. For example, the electronic configuration of carbon is 1s2 2s2 2p2, whereas its noble gas notation is [He] 2s2 2p2. The chemical symbol for Germanium is Ge. The electron configuration can be visualized as the core electrons, equivalent to the noble gas of the preceding period, and the valence electrons (e.g. Chlorine is a yellow-green gas at room temperature. The first number in each group identifies the energy level of the electrons. Beryllium is a hard, grayish metal naturally found in mineral rocks, coal, soil, and volcanic dust. Periodic Table of the Elements Electron configuration of Strontium. It is a soft, silvery-white alkali metal. Cadmium is a soft, bluish-white metal is chemically similar to the two other stable metals in group 12, zinc and mercury. Oxidation states are typically represented by integers which may be positive, zero, or negative. Argon is the third-most abundant gas in the Earth’s atmosphere, at 0.934% (9340 ppmv). The chemical symbol for Magnesium is Mg. Magnesium is a shiny gray solid which bears a close physical resemblance to the other five elements in the second column (group 2, or alkaline earth metals) of the periodic table: all group 2 elements have the same electron configuration in the outer electron shell and a similar crystal structure. Einsteinium is the seventh transuranic element, and an actinide. Mercury is commonly known as quicksilver and was formerly named hydrargyrum. The next six electrons will go in the 2p orbital. Nobelium is the tenth transuranic element and is the penultimate member of the actinide series. Terbium is a silvery-white, rare earth metal that is malleable, ductile, and soft enough to be cut with a knife. Lawrencium is the final member of the actinide series. Strontium is a chemical element with atomic number 38 which means there are 38 protons and 38 electrons in the atomic structure. All of the alkali metals have a single valence electron in the outer electron shell, which is easily removed to create an ion with a positive charge – a cation, which combines with anions to form salts. When we write the configuration we'll put all 18 electrons in orbitals around the nucleus of the Argon atom. Samarium is a chemical element with atomic number 62 which means there are 62 protons and 62 electrons in the atomic structure. Iron is a chemical element with atomic number 26 which means there are 26 protons and 26 electrons in the atomic structure. Tungsten is an intrinsically brittle and hard material, making it difficult to work. Tellurium is a brittle, mildly toxic, rare, silver-white metalloid. The chemical symbol for Scandium is Sc. The chemical symbol for Gadolinium is Gd. It is an extremely reactive element and a strong oxidising agent: among the elements, it has the highest electron affinity and the third-highest electronegativity, behind only oxygen and fluorine. 1822s22p63s23pⓇ4s23d1 O B. The chemical symbol for Cobalt is Co. Cobalt is found in the Earth’s crust only in chemically combined form, save for small deposits found in alloys of natural meteoric iron. In the periodic table, the elements are listed in order of increasing atomic number Z. Will have the same configuration as argon. Tungsten is a chemical element with atomic number 74 which means there are 74 protons and 74 electrons in the atomic structure. The reason why it has the same configuration as argon is because if you look at Scandium on the periodic table, you see that it has one electron in a d orbital, but we have sc3+, meaning it is missing 3 electrons, so moving back 3 spaces we get to Argon. Scandium is a chemical element with atomic number 21 which means there are 21 protons and 21 electrons in the atomic structure. Selenium is a nonmetal with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, and also has similarities to arsenic. The number of electrons in each element’s electron shells, particularly the outermost valence shell, is the primary factor in determining its chemical bonding behavior. Astatine is the rarest naturally occurring element on the Earth’s crust. The chemical symbol for Rubidium is Rb. Like the other metals of the platinum group, ruthenium is inert to most other chemicals. Sodium is an alkali metal, being in group 1 of the periodic table, because it has a single electron in its outer shell that it readily donates, creating a positively charged atom—the Na+ cation. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal. The electron configuration for cobalt is 1s2 2s2 2p6 3s2 3p6 3d7 4s2. Plutonium is a chemical element with atomic number 94 which means there are 94 protons and 94 electrons in the atomic structure. The chemical symbol for Manganese is Mn. These elements, along with the chemically similar elements scandium and yttrium, are often collectively known as the rare earth elements. An element that is not combined with any other different elements has an oxidation state of 0. Use this tool to draw the orbital diagram. Its monatomic form (H) is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass. The chemical symbol for Ruthenium is Ru. It is a member of the chalcogen group on the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds. Our Privacy Policy is a legal statement that explains what kind of information about you we collect, when you visit our Website. The ground-state electron configuration of Sc is O A. Zirconium is mainly used as a refractory and opacifier, although small amounts are used as an alloying agent for its strong resistance to corrosion. To calculate an electron configuration, divide the periodic table into sections to represent the atomic orbitals, the regions where electrons are contained. Scandium is a chemical element with atomic number 21 which means there are 21 protons and 21 electrons in the atomic structure. 6/14/ Ch 8 4/18 Correct Part B Complete an orbital diagram for scandium (Sc). Arsenic is a chemical element with atomic number 33 which means there are 33 protons and 33 electrons in the atomic structure. Americium is a transuranic member of the actinide series, in the periodic table located under the lanthanide element europium, and thus by analogy was named after the Americas. Previous question Next question Get more help from Chegg. The chemical symbol for Fermium is Fm. It is the fourth most common element in the Earth’s crust. Calcium is an alkaline earth metal, it is a reactive pale yellow metal that forms a dark oxide-nitride layer when exposed to air. Under standard conditions, it is the lightest metal and the lightest solid element. Titanium can be used in surface condensers. Electrons have a specific form of distribution (or configuration) in every atom, even Scandium. ↑↓ ↑↓ ↑↓. The chemical symbol for Titanium is Ti. Germanium is a lustrous, hard, grayish-white metalloid in the carbon group, chemically similar to its group neighbors tin and silicon. The chemical symbol for Selenium is Se. The primary decay mode at masses lower than the only stable isotope, 45 Sc, is electron capture, and the primary mode at masses above it is beta emission. Terbium is a chemical element with atomic number 65 which means there are 65 protons and 65 electrons in the atomic structure. The chemical symbol for Lutetium is Lu. Selenium is a chemical element with atomic number 34 which means there are 34 protons and 34 electrons in the atomic structure. Discoverer: Marinsky, Jacob A. and Coryell, Charles D. and Glendenin, Lawerence. For atoms with many electrons, this notation can become lengthy and so an abbreviated notation is used. Naturally occurring potassium is composed of three isotopes, of which 40K is radioactive. This list of electron configurations of elements contains all the elements in increasing order of atomic number. It is a noble metal and a member of the platinum group. Vanadium is a chemical element with atomic number 23 which means there are 23 protons and 23 electrons in the atomic structure. In the case of Cesium the abbreviated electron configuration is [Xe] 6s1. Europium is a chemical element with atomic number 63 which means there are 63 protons and 63 electrons in the atomic structure. In fact their absorption cross-sections are the highest among all stable isotopes. Its density is about 70% higher than that of lead, and slightly lower than that of gold or tungsten. The chemical symbol for Tin is Sn. The chemical symbol for Cerium is Ce. The chemical symbol for Protactinium is Pa. Protactinium is a dense, silvery-gray metal which readily reacts with oxygen, water vapor and inorganic acids. A freshly exposed surface of pure copper has a reddish-orange color. Mercury is a chemical element with atomic number 80 which means there are 80 protons and 80 electrons in the atomic structure. What is the noble gas configuration for sc? Its boiling point is the lowest among all the elements. All isotopes of radium are highly radioactive, with the most stable isotope being radium-226. It is the heaviest essential mineral nutrient. Fluorine is a chemical element with atomic number 9 which means there are 9 protons and 9 electrons in the atomic structure. Rhodium is a rare, silvery-white, hard, corrosion resistant and chemically inert transition metal. The chemical symbol for Cadmium is Cd. Zirconium is widely used as a cladding for nuclear reactor fuels. Tin is a chemical element with atomic number 50 which means there are 50 protons and 50 electrons in the atomic structure. Francium is a highly radioactive metal that decays into astatine, radium, and radon. It is the eponym of the lanthanide series, a group of 15 similar elements between lanthanum and lutetium in the periodic table, of which lanthanum is the first and the prototype. The chemical symbol for Praseodymium is Pr. Iridium is a very hard, brittle, silvery-white transition metal of the platinum group, iridium is generally credited with being the second densest element (after osmium). It rarely occurs in its elemental state or as pure ore compounds in the Earth’s crust. Write the electron configurations of Sc and Sc+. Pure radium is silvery-white alkaline earth metal. Arsenic is a metalloid. Rubidium is a soft, silvery-white metallic element of the alkali metal group, with an atomic mass of 85.4678. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formula S8. Promethium is one of only two such elements that are followed in the periodic table by elements with stable forms. Write the electron configuration (full, and in core notation). Like all elements with atomic number over 100, nobelium can only be produced in particle accelerators by bombarding lighter elements with charged particles. Promethium is a chemical element with atomic number 61 which means there are 61 protons and 61 electrons in the atomic structure. This website was founded as a non-profit project, build entirely by a group of nuclear engineers. The electron configuration of atoms explains the common form of the periodic system of elements (Fig. It is even less abundant than the so-called rare earths. The chemical symbol for Rhenium is Re. Cobalt is a chemical element with atomic number 27 which means there are 27 protons and 27 electrons in the atomic structure. The chemical symbol for Uranium is U. Gold is thought to have been produced in supernova nucleosynthesis, from the collision of neutron stars. Mercury is a heavy, silvery d-block element, mercury is the only metallic element that is liquid at standard conditions for temperature and pressure. The chemical symbol for Oxygen is O. Thallium is a soft gray post-transition metal is not found free in nature. [Xe] 6s2 for barium). The chemical symbol for Argon is Ar. It is obtained chiefly from the mineral cassiterite, which contains tin dioxide. Boron is a chemical element with atomic number 5 which means there are 5 protons and 5 electrons in the atomic structure. Groups one and two are the s-block, three through 12 represent the d-block, 13 to 18 are the p-block and the two rows at the bottom are the f-block. Krypton is a chemical element with atomic number 36 which means there are 36 protons and 36 electrons in the atomic structure. Answer to Draw an orbital diagram for scandium (Sc). Molybdenum a silvery metal with a gray cast, has the sixth-highest melting point of any element. A good starting point when looking for the electron configuration of an ion is the electron configuration of the neutral atom.. Like all alkali metals, lithium is highly reactive and flammable, and is stored in mineral oil. The chemical symbol for Molybdenum is Mo. Xenon is a chemical element with atomic number 54 which means there are 54 protons and 54 electrons in the atomic structure. The chemical symbol for Helium is He. Carbon is the 15th most abundant element in the Earth’s crust, and the fourth most abundant element in the universe by mass after hydrogen, helium, and oxygen. Bromine is a chemical element with atomic number 35 which means there are 35 protons and 35 electrons in the atomic structure. The chemical symbol for Lithium is Li. The chemical symbol for Radium is Ra. Antimony is a chemical element with atomic number 51 which means there are 51 protons and 51 electrons in the atomic structure. The elemental metal is rarely found in nature, but once isolated artificially, the formation of an oxide layer (passivation) stabilizes the free metal somewhat against further oxidation. Because of its closed-shell electron configuration, its density and melting and boiling points differ significantly from those of most other lanthanides. Thorium metal is silvery and tarnishes black when exposed to air, forming the dioxide. Actinium is a chemical element with atomic number 89 which means there are 89 protons and 89 electrons in the atomic structure. Thulium is an easily workable metal with a bright silvery-gray luster. We assume no responsibility for consequences which may arise from the use of information from this website. Rhenium is a silvery-white, heavy, third-row transition metal in group 7 of the periodic table. Holmium is a part of the lanthanide series, holmium is a rare-earth element. The chemical symbol for Silver is Ag. Titanium is a chemical element with atomic number 22 which means there are 22 protons and 22 electrons in the atomic structure. Lanthanum is a chemical element with atomic number 57 which means there are 57 protons and 57 electrons in the atomic structure. Since 1s can only hold two electrons the next 2 electrons for Iron go in the 2s orbital. So for scandium the 1 st and 2 nd electron must be in 1s orbital, the 3 rd and 4 th in the 2s, the 5 th through 10 th in the 2p orbitals, etc. Lanthanum is a soft, ductile, silvery-white metal that tarnishes rapidly when exposed to air and is soft enough to be cut with a knife. The Cookies Statement is part of our Privacy Policy. The first two columns on the left side of the periodic table are where the s subshells are being occupied. al. Bromine is the third-lightest halogen, and is a fuming red-brown liquid at room temperature that evaporates readily to form a similarly coloured gas.