Answer
a) S, +3; O, -2
b) Na, +1; O, -1
c) P, +5; O, -2
d) N, +5; O, -2
Work Step by Step
a) S, +3; O, -2
b) Na, +1; O, -1
c) P, +5; O, -2
d) N, +5; O, -2
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