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Consider the ground state of Cr atom (Z ...

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

A

12 and 4

B

12 and 5

C

16 and 4

D

16 and 5

Text Solution

Verified by Experts

`""_(24)Cr=1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(5)4s^(2)`
l = 1 means p-sub-shell and l = 2 means d-sub-shell.
l=1 is for `2p^(6)` and `3p^(6). Therefore` Total electrons=12
l=2 is for `3d^(5). Therefore` Total electrons=5
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