Question

The most common oxidation states of chromium are

• A. +2 and +7
• B. +2 and +3
• C. +1 and +6
• D. +3 and +6
• E. +2 and +4

Hint:

Chromium commonly exists in oxidation states +2, +3, and +6, with the most stable and frequent ones being +3 and +6.

Answer 1

The Correct Option is D

Chromium (Cr) is a transition metal and exhibits several oxidation states. The most common oxidation states of chromium are:
- +2: Chromium in the +2 oxidation state is common, but less stable compared to +3 and +6.
- +3: This is one of the most stable and common oxidation states of chromium, often seen in chromium compounds.
- +6: This is another common oxidation state of chromium, found in compounds like chromates and dichromates.
Thus, the most common oxidation states of chromium are +3 and +6. Therefore, the correct answer is (D) +3 and +6.