Multiple choice

In acidic medium, hydrogen peroxide changes Cr2O72- to CrO5, which has two (-O-O-) bonds. The oxidation state in CrO5 is

  1. +1

  2. +3

  3. +6

  4. -5

  5. None of these

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This option is correct because CrO5 has butterfly structure having two peroxo bonds. Peroxo has -1 oxidation state. CrO5 x + 4(-1) + 1(-2) = 0, x = +6