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JEE CHEMISTRY MCQ: STRUCTURE OF ATOM

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Ions which have the same electronic configuration are those of

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Correct option: C

Potassium and calcium

Option C is correct. K⁺ and Ca²⁺ both have the same electronic configuration: 1s²2s²2p⁶3s²3p⁶, which is the electronic configuration of Argon.

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