Question

Which of the following pairs have different hybridisation and same shape?
(i) $N{O}_3^{-}$ and $C{O}_3^{2-}$
(ii) $S{O}_2$ and $N{H}_2^{-}$
(iii) $Xe{F}_2$ and $C{O}_2$
(iv) $H_{2}O$ and $N{H}_3$

• A. (i) and (iv)
• B. (ii) and (iv)
• C. (ii) and (iii)
• D. None of these

Answer 1

Answer: (C)

(i) $\underset{(s{p}^2,\text{trigonalplanar})}{N{O}_3^{-}}\underset{(s{p}^2,\text{trigonalplanar})}{C{O}_3^{2-}}$
Same hybridisation and same shape.
(ii) $\underset{(s{p}^2,\text{bent})}{S{O}_2}\underset{(s{p}^3,\text{bent})}{N{H}_2^{-}}$
Different hybridisation and same shape.
(iii) $\underset{(s{p}^{3}d,\text{linear})}{Xe{F}_2}\underset{(sp,\text{linear})}{C{O}_2}$
Different hybridisation and same shape.
(iv) $\underset{(s{p}^3,\text{angular})}{H_{2}O}\underset{(s{p}^3,\text{pyramidal})}{N{H}_3}$
Same hybridisation and different shape