Locating each element in the periodic table:
From the following list of elements —Ar, H, Ga, Al, Ca, Br, Ge, K,O— pick the one that best fits each description; use each element only once.
(a) an alkali metal
(b) an alkaline earth metal
(c) a noble gas
(d) a halogen
(e) a metalloid
(f) a nonmetal listed in group 1A
(g) a metal that forms a 3+ ion
(h) a nonmetal that forms a 2- ion
(i) an element that resembles aluminum
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