Which of the following has more number of unpaired electron?

Z n^{+}

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F e^{2 +}

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N i^{2 +}

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C u^{+}

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Solution

The correct option is B $F e^{2 +}$
${F e}^{2 +}$ has electronic config. ${1 s}^{2} {2 s}^{2} {2 p}^{6} {3 s}^{2} {3 p}^{6} {4 s}^{1} {3 d}^{5}$ . So it has 6 unpaired electrons.

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Similar questions

(A t o m i c n u m b e r o f F e = 26)

S c = 21, F e = 26, V = 23, N i = 28)

Which of the following has more unpaired d electrons?

N i^{2 +}

e^{-}

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