Question

The bond order in $NO$ is $2.5$ while that in ${NO}^{+}$ is $3$. Which statement is true for these two species?

• A. Bond length is unpredictable
• B. Bond length in $NO$ is greater than in ${NO}^{+}$
• C. Bond length in ${NO}^{+}$ is equal to that in $NO$
• D. Bond length in ${NO}^{+}$ is greater than in $NO$

Answer 1

Answer: (B)

Bond length in $NO$ is greater than in ${NO}^{+}$

The bond order in $NO$ is $2.5$ while that in ${NO}^{+}$ is $3$ so bond length in $NO$ is greater than in ${NO}^{+}$. As larger the bond order, smaller is the bond length and vice versa.

The bond order in $NO$ is $2.5$ which is less than ${NO}^{+}$ so its bond length will be greater than ${NO}^{+}$.