Question

Which of the following is not pseudo halogen?

• A. $\left(C{N}_2\right)$
• B. $\left(SC{N}_2\right)$
• C. $(OCN{)}_2$
• D. $H_2$

Answer 1

The correct option is D $H_2$

Option $\left(D\right)$ is correct.

$H_2$ is not pseudo halogen compound.

The pseudohalogens are polyatomic analogues of halogens, whose chemistry, resembling that of the true halogens, allows them to substitute for halogens. They have a general formula of $Ps–Ps$ or $Ps–X$ (where $Ps$ is a pseudohalogen group), such as cyanogen, pseudohalide anions, such as cyanide ion. Well-known pseudohalogen functional groups include cyanide, cyanate, thiocyanate, and azide.