Why Are Certain Oxidation States of Chromium More Common Than Others?

[jtkdo_16]

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!

 

[Borek]

Think in terms of electron configuration and crystal (or ligand) field. And it won't hurt if you will try to find some anwers on your own, before asking question.