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Q.

In which of the following pairs, the outer most electronic configuration will be the same?

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a

Cr⁺ and Mn²⁺

b

Ni²⁺ and Cu⁺

c

Fe²⁺ and Co⁺

d

V²⁺and Cr⁺

answer is D.

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Detailed Solution

$Eletronic configuration of {Cr}^{+} = [Ar] 3 d^{5} 4 s^{0} also {Mn}^{2 +} = [Ar] 3 d^{5} 4 s^{0}$

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