The common positive oxidation states for an element with atomic number 24, are :
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- +1 and +3
- +2 to +6
- +1 to +6
- +1 and +3 to +6
The Correct Option is B
Solution and Explanation
It has six valence electrons (five 3d and one 4s), so the highest oxidation state is +6 (e.g. CrO42-, Cr2O72-).
Chromium commonly shows +2 (Cr2+), +3 (most stable, Cr3+), +4, +5 and +6; +1 is not a common state.
So the range of common positive oxidation states is +2 to +6.
Answer: (2) +2 to +6
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