A) -1 only
B) Zero only
C) +1, -1, 0
D) +1 only
Correct Answer: C
Solution :
For example \[\underset{\ +\ \ \ \ \ \ \ \ \ \ \ -\ \ \ \ (0)\,\,\,}{\mathop{HF,\ NaH,\ {{H}_{2}}}}\,\]
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