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JEE CHEMISTRY MCQ: PRACTICAL CHEMISTRY

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Mercurous ion is represented as:
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Correct option: A
Hg22+\mathrm{Hg}_2^{2+}
The correct answer is A (Hg22+\mathrm{Hg}_2^{2+}) because the mercurous ion exists as a diatomic species with a +2 charge overall, meaning each mercury atom has a +1 oxidation state.

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