Which of the following sequence represents the correct increasing order of bond angle in the given molecular ?

Options

A. `H_2O lt OF_2 lt OC l_2 lt ClO_2`
B. `O Cl_2 lt ClO_2 lt H_2O lt OF_2`
C. `OF_2 lt H_2O lt OC l_2 lt ClO_2`
D. `ClO_2 lt OF_2 lt OC l_2 lt H_2O`

Answer

C

Explanation

Bond angle of `OC l_2` is more than even `H_2O` . It is due to larger Cl- atom than H-atom.
Structure of `ClO_2`
Total number of valence electrons in `ClO_2` =7 + 6 x 2 =19
Therefore it is an odd electron species with one 3e-2c bond.

Due to partial `pi` bond character in one of the two Cl-O bond, the O-Cl-O bond angle increases to `118^@`. Therefore , Correct order of increasing bond angle is `OF_2 lt OH_2 lt OCl_2 lt ClO_2`