alleryWhich transition metal forms unstable highest oxidation state +7?
AMn (in KMnO₄, Mn₂O₇)
BFe
CV
DCr
Answer & Solution
Correct answer: A. Mn (in KMnO₄, Mn₂O₇)
Mn shows the widest range of oxidation states: +2, +3, +4, +5, +6, +7. KMnO₄ has Mn(VII). Strong oxidizer.
Other +7 examples rare among first-row d-block.
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