The bonds present in the structure of dichromate ion are

Options

A. four equivalent Cr - O bonds only
B. Six equivalent Cr- O bonds and one O-O bond
C. six equivalent Cr-O bonds and one Cr -Cr bond
D. six equivalent Cr -O bonds and one Cr - O - Cr bond

Answer

D

Explanation

IN `Cr_(2)O_(7)^(2-)`

There ar six equivalent Cr-O bonds and one Cr-O-Cr bond.