Question

Which has the longest bond length for the Cl-O bond?

1. ClO4-
2. ClO3-
3. ClO2-
4. ClO-

Answer 1

4 ClO-

Step-by-step explanation:

Bond length ∝ 1/ Bond order

Bond order of ClO − =1,

Bond order of ClO 2− =1.5,

Bond order of ClO 3− =1.66 ,

Bond order of ClO 4− =1.75.

Thus the order of bond length is

ClO 4− <ClO3− <ClO2−

<ClO −