Study the following unbalanced redox reaction. which one of the following choices represents the balanced redox equation? p4 + o2→ p4o10

p4→ p4 + 2e−

p4 + o2→ p4

p4 + 4o2→ 4p4o10

p4 + 5o2→ p4o10

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.

the answer is c.the valence of the atoms combine .