Question

The single $X-X$ bond made by $N$ is weaker than that of $P$ because:

• A. of repulsion between nitrogen nucleus due to smaller size of nitrogen atom
• B. of repulsion between non-bonded electrons due to smaller size of nitrogen atom
• C. of higher bond enthalpy of nitrogen
• D. all of the above

Answer 1

Answer: (B)

of repulsion between non-bonded electrons due to smaller size of nitrogen atom

The single $N-N$ bonds formed is weaker than single $P-P$ bonds because of lone pair repulsion on small nitrogen molecule.