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The structure of CrO5 is:

1. Oxygen atoms are linked to chromium through peroxo linkage.
2. Chromium is in +6 oxidation state.
3. Chromium is in +4 oxidation state.
4. Chromium is in +3 oxidation state.

Correct answer: Chromium is in +6 oxidation state.

Solution

In CrO5, chromium is in the +6 oxidation state, and the structure contains peroxo linkages. This matches option B.

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