Which of the following sets of quantum number | vedclass

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(B) The electronic configuration of $Cr$ $(Z=24)$ is $[Ar]_{18} 4s^1 3d^5$.Electrons $1$ to $18$ are filled in the $Ar$ core.The $19^{	ext{th}}$ elec

Vedclass · Accepted Answer

$(4, 0, 0, +\frac{1}{2})$

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(B) The electronic configuration of $Cr$ $(Z=24)$ is $[Ar]_{18} 4s^1 3d^5$.Electrons $1$ to $18$ are filled in the $Ar$ core.The $19^{	ext{th}}$ electron is the first electron to enter the $4s$ orbital.For the $4s$ orbital: principal quantum number $n=4$,azimuthal quantum number $l=0$,magnetic quantum number $m_l=0$,and spin quantum number $m_s=+\frac{1}{2}$.Thus,the set of quantum numbers is $(4, 0, 0, +\frac{1}{2})$.

Which of the following sets of quantum numbers represents the $19^{\text{th}}$ electron of $Cr$ $(Z=24)$?

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