Question

Amongst the following, the linear species is

• A. ${{\mathrm{N}}_3}^{-}$
• B. ${\mathrm{ClO}}_2$
• C. ${\mathrm{O}}_3$
• D. ${\mathrm{NO}}_2$

Answer 1

The correct option is A

${{\mathrm{N}}_3}^{-}$

Explanation for correct option:

(A) ${{\mathbf{N}}_{\mathbf{3}}}^{\mathbf{-}}$

1. ${{\mathrm{N}}_3}^{-}$is linear in shape because it id $\mathrm{sp}$hybridized .
2. The structure is as follows: $\stackrel{-}{\mathrm{N}}=\stackrel{+}{\mathrm{N}}=\stackrel{-}{\mathrm{N}}$

Explanation for incorrect options:

(B) ${\mathbf{ClO}}_{\mathbf{2}}$

1. This compound is bent shaped and ${\mathrm{sp}}^3$hybridized.
2. The structure is as follows:

(C) ${\mathbf{O}}_{\mathbf{3}}$

1. ${\mathrm{O}}_3$ also has bent shape and ${\mathrm{sp}}^2$ hybridized.
2. The structure is as follows:

(D) ${\mathbf{NO}}_{\mathbf{2}}$

1. ${\mathrm{NO}}_2$ Has bent structure and is ${\mathrm{sp}}^2$ hybridized
2. Its structure is as follows:

Hence, option A in correct, ${{\mathrm{N}}_3}^{-}$ is linear in shape.