The Periodic Table, Molecules and Molecular Compounds, and Ions and Ionic Compounds (Sections)
For each of the following elements, write its chemical symbol, determine the name of the group to which it belongs (Table), and indicate whether it is a metal, metalloid, or nonmetal:
Table Names of Some Groups in the Periodic Table
Group | Name | Elements |
1A | Alkali metals | Li, Na, K, Rb, Cs, Fr |
2A | Alkaline earth metals | Be, Mg, Ca, Sr, Ba, Ra |
6A | Chalcogens | O, S, Se, Te, Po |
7A | Halogens | F, Cl, Br, I, At |
8A | Noble gases (or rare gases) | He, Ne, Ar, Kr, Xe, Rn |
(a) potassium, (b) iodine, (c) magnesium, (d) argon, (e) sulfur.
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