The most common oxidation states of chromium are +2, +3, and +6, with +3 being the most stable. +1, +4 and +5 are rare. Questions; 1. As given above, +2, +3, and +6 are stable, what are the possible reason of there oxidation state stability ? 2. +3 was the most stable oxidation state of chromium, What is the possible rationale of +3 as being the most stable? 3. +1, +4 and +5 are considered as rare oxidation state of chromium, What is the unlikely reason for that statement? thank you and God bless you!