Question

The shape and total number lone pair of electron present in $Cl{O}_2^{-}$ is

• A. bent, 7
• B. 7, bent
• C. planar , 2
• D. tetrahedral, 2

Answer 1

The correct option is A bent, 7

$H=\frac{1}{2}(V+M-C+A)$

where H= No. of orbitals involved in hybridisation
V= No. of electrons in in valence shell of the central atom
M= No. of monovalent atoms
C=Charge on cation
A= Charge on anion

For $Cl{O}_2^{-}$, we have, $H=\frac{1}{2}(7+0-)+1)$
$\Rightarrow H=\frac{1}{2}(7+1)=4$
or $s{p}^3$ hybridisation
2 lone pair on Cl atom.
shape is bent.
Total number of lone pair of electrons =7