# Which of the following is not a pseudohalogen ?

$\begin{array}{1 1}CN^-\\SCN^-\\OCN^-\\NO^+\end{array}$

Solution :
The pseudohalogens are polyatomic analogues of halogens, whose chemistry, resembling that of the true halogens, allows them to substitute for halogens in several classes of chemical compounds.
answered Jul 29, 2014
edited Nov 20, 2017 by meena.p