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Question

Consider the ground state of Cr atom (X =24). The number of electrons with the azimuthal quantum numbers,  I = 1 and 2 are, respectively


A

16 and 4

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B

12 and 5

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C

12 and 4

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D

16 and 5

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Solution

The correct option is B

12 and 5


Electron configuration of Cr atom(Z=24)
=1s2, 2S22p6, 3s23p63d5, 4s1
When I=1, p-subshell, Numbers of electrons = 12
When I=2, d-subshell,
Numbers of electtrons = 5

Chemistry

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