Consider the ground state `Cr` atom `(Z = 24)`. The number of electron with the azimuthal number `l = 1` and `2` ,respectively are

Options

A. `12` and `4`
B. `12` and `5`
C. `16` and `4`
D. `16` and `5`

Answer

2

Explanation

`_(24)Cr rarr 1s^(2), 2s^(2), 2p^(6), 3s^(2), 3p^(6), 3d^(6), 4s^(1) " " l=1, l=1, l=2`
(we know for `p, l=1` and for `d, l=2`)." " For `l=1`, total number of electron `=12`
For `l=2`, total number of electron `=5`