Number of completely filled orbitals in xenon | vedclass

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Question

(C) The electronic configuration of xenon $(Xe)$ with atomic number $54$ is: $1s^2, 2s^2, 2p^6, 3s^2, 3p^6, 3d^{10}, 4s^2, 4p^6, 4d^{10}, 5s^2, 5p^6$.

Vedclass · Accepted Answer

$27$

Vedclass · Answer

(C) The electronic configuration of xenon $(Xe)$ with atomic number $54$ is: $1s^2, 2s^2, 2p^6, 3s^2, 3p^6, 3d^{10}, 4s^2, 4p^6, 4d^{10}, 5s^2, 5p^6$. Counting the orbitals: $1s$ ($1$ orbital),$2s$ ($1$ orbital),$2p$ ($3$ orbitals),$3s$ ($1$ orbital),$3p$ ($3$ orbitals),$3d$ ($5$ orbitals),$4s$ ($1$ orbital),$4p$ ($3$ orbitals),$4d$ ($5$ orbitals),$5s$ ($1$ orbital),$5p$ ($3$ orbitals). Total number of orbitals = $1 + 1 + 3 + 1 + 3 + 5 + 1 + 3 + 5 + 1 + 3 = 27$.

Number of completely filled orbitals in xenon atom $(Xe)$ is

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