Question

Highest oxidation numbers for chromium and manganese:

• A. +6, +6
• B. +6, +7
• C. +7, +6
• D. +5, +7

Hint:

The highest oxidation state for chromium is +6 and for manganese is +7, seen in compounds like CrO\(_3\) and KMnO\(_4\), respectively.

Answer 1

The Correct Option is B

Step 1: Oxidation numbers of chromium and manganese.
Chromium (Cr) can have an oxidation number of +6 in compounds like CrO\(_3\) (chromium trioxide). Manganese (Mn) can have an oxidation number of +7 in compounds like KMnO\(_4\) (potassium permanganate).
Step 2: Conclusion.
Thus, the highest oxidation numbers are +6 for chromium and +7 for manganese, which corresponds to option (B).