There are multiple ways of grouping the elements, but they are commonly divided into metals, semimetals (metalloids), and nonmetals. Boron is the only element in this group that is not a metal. You'll find more specific groups, like transition metals, rare earths, alkali metals, alkaline earth, halogens, and noble gasses. 2. The halogens or halogen elements; fluorine (F), chlorine (Cl), bromine (Br), Iodine (I), astatine (At) and possibly the unknown (Uss), are a group of nonmetal elements. 3.Gallium. Radon, helium, xenon, neon, krypton and argon are eight noble gases. The term "halogen" means "salt-former" and compounds containing halogens are called "salts". The elements are arranged in rows (periods) and the columns (groups). Each of the 13 elements has their own unique physical and chemical properties. Members of a group typically have similar properties and electron configurations in their outer shell. The elements in Group IIIA (B, Al, Ga, In, and Tl) can be divided into three classes. Due to the halogens high reactivity, they tend to exist in nature as compounds and ions. The atomic number of each element increases by one, reading from left to right. Aluminium. Period A horizontal row in the periodic table. 4 New Elements Are Added To The Periodic Table : The Two-Way With the discoveries now confirmed, "The 7th period of the periodic table of elements is … 1.Boron. Aluminum is the third most abundant element in the earth's crust. Na is a very reactive element in Period 3, what other elements in Period 2 would be considered reactive? The Periodic Table: Illustration of every element in the order of its atomic number is given in the periodic table. The elements have very similar properties: they are all shiny, silvery-white, somewhat reactive metals at standard temperature and pressure.. The alkaline earth metals are six chemical elements in group 2 of the periodic table.They are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). Block Elements are organised into blocks by the orbital type in which the outer electrons are found. The Group 6A elements have six valence electrons in their highest-energy orbitals (ns 2 np 4). It behaves like a semimetal or even a nonmetal. This is only two electrons away from having a full octet of eight electrons, so many of these elements form anions having -2 charges: oxide, O 2-; sulfide, S 2-, selenide, Se 2-, etc. Mercury (Hg) and bromine (Br) are the only elements in the periodic table that are liquids at room temperature. Lithium (group 1 - IA) and Fluorine (group 17 - VIIA) Every element in the Carbon group (family) has how many valence electrons? They are nonreactive, mono-atomic elements with extremely low boiling points. There is no element in period 3 group 6. It is just slightly less reactive than the active metals. I think the most mysterious,beautiful and useful elements in our world is Group 3,4,5,6 and 7 elements.And know it is time to meet you up with Group 3 elements. The element at period 3, group 16 (called on very old periodic tables group VIA) is sulfur (S).