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Question

The total number of electrons in the ground state of chromium with magnetic quantum number, m = 0 is:


A

10

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B

12

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C

13

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D

11

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Solution

The correct option is B

12


Cr has 1s22s22p63s23p63d54s1 configuration in the ground state.

Total electrons with m = 0 are 2 + 2 + 2 + 2 + 2 + 1 + 1 = 12


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