What is the number of protons in the nucleus | vedclass

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(B) The $2p$ subshell consists of three orbitals $(2p_x, 2p_y, 2p_z)$.According to Hund's rule of maximum multiplicity,electrons fill these orbitals s

Vedclass · Accepted Answer

$7$

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(B) The $2p$ subshell consists of three orbitals $(2p_x, 2p_y, 2p_z)$.According to Hund's rule of maximum multiplicity,electrons fill these orbitals singly before pairing begins.The maximum number of unpaired electrons in the $2p$ subshell is $3$,which occurs in the Nitrogen atom $(Z = 7)$.The electronic configuration of Nitrogen is $1s^2 2s^2 2p^3$.Since the atomic number $(Z)$ equals the number of protons,the number of protons is $7$.

What is the number of protons in the nucleus of an element that has the maximum number of unpaired electrons in the $2p$ subshell?

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