JEE CHEMISTRY MCQ: STRUCTURE OF ATOM

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\mathrm{Co}^{3+}, \mathrm{Mn}^{+}, \mathrm{Fe}^{2+}

and

\mathrm{Cr}

are isoelectronic (24 electrons) in each. Thus, EC are identical in

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Correct option: A

\mathrm{Mn}^{+}, \mathrm{Cr}

Option A is correct because only Mn+ and Cr have the same electronic configuration after accounting for the charge and the exception in Cr's configuration.

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