Question

Which of the following statements is correct with respect to bond angle?

• A. In $N{O}_2^{+}$, bond angle is less than ${120}^o$
• B. The $H-O-H$ angle in $H_{2}O$ is approximately ${180}^{\circ }$
• C. The $Cl-P-Cl$ angle in $POC{l}_3$ is less than ${109}^o{28}^{\prime }$
• D. The $H-N-H$ angle in $N{H}_3$ ismore than ${120}^{\circ }$

Answer 1

The correct option is C The $Cl-P-Cl$ angle in $POC{l}_3$ is less than ${109}^o{28}^{\prime }$

(A) In $N{O}_2^{+}$, bond angle is ${180}^o$ due to $sp$ hybridization of $N$-atom.
(B) The$H-O-H$ angle in $H_{2}O$ is ${104.5}^o$ due to $s{p}^3$ hybridization of $O-$atom and presence of two lone pairs on it.
(C) The $Cl-P-Cl$ angle in $POC{l}_3$ is less than ${109}^o{28}^{\prime }$ due to the $\pi$ bond formed by $P-$atom causing greater bond pair-bond pair repulsion.
(D) The$H-N-H$ angle in $N{H}_3$ is less than ${109}^o{28}^{\prime }$ due to $s{p}^3$ hybridization of $N$-atom and presence of one lone pair on it.