Question

Based upon M.O. theory state reason for the paramagnetic characater of $CN$, the diamagnetic character of $CN$, the stability of $CN$ and calculate their respective bond orders.

• A. $2\frac{1}{2},2$
• B. $2\frac{1}{2},3$
• C. $1\frac{1}{2},3$
• D. $1\frac{1}{2},2$

Answer 1

The correct option is B $2\frac{1}{2},3$

$CN$ electrons=$13$, bonding electrons=$9$, antibonding electrons=$4$, B.O=$2.5$, paramagnetic