Q2 / 225 · JEE Main 2004 · Chemistry

Consider the ground state of $\mathrm{Cr}$ atom $(Z=24)$. The number of electrons with the azimuthal quantum numbers $\mathrm{I}=1$ and 2 are respectively

A
12 and 4
B
16 and 5
C
16 and 4
Correct answer
D
12 and 5

Solution

$24 \longrightarrow 1 s^2 2 s^2 2 p^6 3 s^2 3 p^6 4 s^1 3 d^5$ $I=1 \rightarrow p \longrightarrow 12$ $I=2 \rightarrow d \longrightarrow 5$

Hence, the correct answer is option: 'D'.

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