Bond length is maximum in

Options

A. HF
B. HCl
C. HI
D. HBr

Answer

C

Explanation

Oxidising power of species is directly proportional to reduction potentials. Therefore , order of oxidising power to give ions is a follows :
`{:("Ion", BrO_(4)^(-), gt, IO_4^(-), gt , ClO_(4)^(-)),(E_(c)(V),1.74,,1.65,,1.19):}`