The four quantum numbers of the valence elect | vedclass

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(C) The atomic number of potassium $(K)$ is $19$. The electronic configuration is $1s^2, 2s^2, 2p^6, 3s^2, 3p^6, 4s^1$. The valence electron is in the

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$4, 0, 0$ and $+\frac{1}{2}$

Vedclass · Answer

(C) The atomic number of potassium $(K)$ is $19$. The electronic configuration is $1s^2, 2s^2, 2p^6, 3s^2, 3p^6, 4s^1$. The valence electron is in the $4s$ orbital. For the $4s^1$ electron: Principal quantum number $(n)$ = $4$. Azimuthal quantum number $(l)$ for $s$-orbital = $0$. Magnetic quantum number $(m_l)$ = $0$. Spin quantum number $(m_s)$ = $+\frac{1}{2}$.

The four quantum numbers of the valence electron of potassium are

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