Which of the following is a disproportionation reaction

Options

(a) 2Cu⁺ → Cu²⁺ + Cu
(b) Cu → Cu⁺
(c) Cl₂ → 2Cl⁻
(d) 2Mg + O₂ → 2MgO

Correct Answer:

2Cu⁺ → Cu²⁺ + Cu

Explanation:

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