In acidic medium, for MnO 4 − → Mn 2+ , the number of electrons gained per MnO 4 − is:

🧪 Chemistry · Redox Reactions · NEET & JEE

In acidic medium, for MnO4− → Mn2+, the number of electrons gained per MnO4− is:

Answer: 5.

Correct answer: C. 5

Explanation: Manganese goes from +7 to +2, a change of 5 units, so 5 electrons are gained.

Electron transfer in a redox reaction: zinc loses electrons (oxidised, acts as reducing agent) and copper(II) ions gain those same electrons (reduced, acts as oxidising agent).

Concept context

Master electron transfer in chemistry: assign oxidation states, balance half-reactions, identify oxidising and reducing agents, and connect redox to everyday reactions.

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In acidic medium, for MnO<sub>4</sub><sup>−</sup> → Mn<sup>2+</sup>, the number of electrons gained per MnO<sub>4</sub><sup>−</sup> is:

Concept context

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