Question

What is the oxidation number of C in HNC?

Answer 1

$\stackrel{+1}{H}-\stackrel{-3}{N}=\ddot{C}:$

Let, the oxidation number of $C$ be $x$.

$\therefore$ $x-3+1=0$

$\therefore$ $x-2=0$

$\therefore$ $x=+2$

Therefore, the oxidation number of C in HNC is +2.