Atoms of which pair of elements will form metallic bonds in a compound? A. Cand Si
B. Li and S
C. Co and Fe
D. Cand o

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

answer; 4 electrons;