Which of the following is the correct set of | vedclass

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(D) The electronic configuration of $Cr$ $(Z=24)$ is $[Ar] 3d^5 4s^1$.The first $18$ electrons occupy the Argon core $(1s^2 2s^2 2p^6 3s^2 3p^6)$.Acco

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$n=4, l=0, m=0, s=+\frac{1}{2}$

Vedclass · Answer

(D) The electronic configuration of $Cr$ $(Z=24)$ is $[Ar] 3d^5 4s^1$.The first $18$ electrons occupy the Argon core $(1s^2 2s^2 2p^6 3s^2 3p^6)$.According to the Aufbau principle, the $19^{th}$ electron enters the $4s$ orbital.For the $4s$ orbital, the principal quantum number $n=4$, the azimuthal quantum number $l=0$, the magnetic quantum number $m=0$, and the spin quantum number $s=+\frac{1}{2}$.

Which of the following is the correct set of $4$ quantum numbers for the $19^{th}$ electron in Chromium (Atomic number = $24$) in accordance with the Aufbau principle?

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