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Question

The valence shell electronic configuration of Cr2+ ion is

A
4s03d4
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B
4s23d2
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C
4s23d0
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D
3p64s2
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Solution

The correct option is A 4s03d4
Electronic configuration of chromium
Cr[Ar]3d54s1
Cr2+[Ar]3d44s0.

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