Question

1. For this question, consider only the following neutral elements as possible answers: Li, Na, K, Rb, Cs Be, Mg, Ca, Sr, Ba For each part, give the symbol from the above list that makes the statement correct. (a) __ has smallest atomic radius. has valence electrons in the n= 4 shell with Z -2. (c) ___ is the alkali metal that reacts most explosively with water.