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 elementonly once: (a) an alkali metal, (b) an alkaline earth metal, (c) anoble gas, (d) a halogen, (e) a metalloid, (f) a nonmetal listed ingroup 1A, (g) a metal that forms a 3+ ion, (h) a nonmetal thatforms a 2- ion, (i) an element that resembles aluminum.

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