The pair of ions having same electronic configuration is............
(a) Cr^{3+},Fe^{3+}
(b)Fe^{3+},Mn^{2+}
(c) Fe^{3+},CO^{3+}
(d) Sc^{3+},Cr^{3+}

Answers (1)

The answer is the option (b) Fe^{3+},Mn^{2+} because they have the same number of electrons, hence the same electronic configuration.

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