Question

The numbers of lone pairs and bond pairs in hydrazine are, respectively

• A. 2 and 4
• B. 2 and 6
• C. 2 and 5
• D. 1 and 5

Answer 1

Answer: (C)

The molecular formula of hydrazine is $N{H}_{2}N{H}_2$.
From the structure, it is clear that it has 2 lone pairs and 5 bond pairs ($4N—H$ and $1N-N$).