Q.

Correct trends from ClO- to ClO4 are
A) Oxidation ability decreases
B) Number of delocalised electrons increases
C) Number of lone electron pairs on chlorine decreases
D) O – Cl bond length decreases

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a

A, B, C and D

b

A, C, D only

c

A, B, C only

d

B, C, D only

answer is D.

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Detailed Solution

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Bond order of ClO=1,

Bond order of ClO2-​=1.5,
 

Bond order of  ClO3-​=1.66 ,

Bond  order of ClO4-=1.75.

Thus the order of bond length is ClO4-< ClO3-<  ClO2-<  ClO-

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