Which oxidation state identifies hexavalent chromium?

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Multiple Choice

Which oxidation state identifies hexavalent chromium?

Explanation:
Hexavalent chromium is chromium in the +6 oxidation state. So the form with chromium in the +6 state, written as Cr6+, identifies hexavalent chromium. Other oxidation states shown in the options correspond to non-hexavalent forms: Cr3+ is trivalent, Cr0 is elemental chromium with oxidation state 0, and Cr2+ is divalent (+2). Thus Cr6+ is the correct identification.

Hexavalent chromium is chromium in the +6 oxidation state. So the form with chromium in the +6 state, written as Cr6+, identifies hexavalent chromium. Other oxidation states shown in the options correspond to non-hexavalent forms: Cr3+ is trivalent, Cr0 is elemental chromium with oxidation state 0, and Cr2+ is divalent (+2). Thus Cr6+ is the correct identification.

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