The number of unpaired electrons in 1s^2, 2s^ | vedclass

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(B) The electronic configuration is given as $1s^2, 2s^2, 2p^4$.According to Hund's rule of maximum multiplicity,the $2p$ subshell has $3$ orbitals $(

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$2$

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(B) The electronic configuration is given as $1s^2, 2s^2, 2p^4$.According to Hund's rule of maximum multiplicity,the $2p$ subshell has $3$ orbitals $(2p_x, 2p_y, 2p_z)$.Filling $4$ electrons in these orbitals: the first $3$ electrons occupy each orbital singly,and the $4th$ electron pairs up in the first orbital.This results in $1$ fully filled orbital and $2$ half-filled orbitals.Therefore,there are $2$ unpaired electrons.

The number of unpaired electrons in $1s^2, 2s^2 2p^4$ is

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