The Aufbau principle is obeyed in which of th | vedclass

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Question

(A) According to the Aufbau principle,electrons are filled in the orbitals in the increasing order of their energy levels $(1s < 2s < 2p < 3s < 3p < 4

Vedclass · Accepted Answer

$1s^2 2s^2 2p^6$

Vedclass · Answer

(A) According to the Aufbau principle,electrons are filled in the orbitals in the increasing order of their energy levels $(1s In option $(A)$,the configuration $1s^2 2s^2 2p^6$ follows the correct order of energy filling.In option $(B)$,$3p$ is filled before $3s$,which violates the principle.In option $(C)$,the $2s$ and $2p$ orbitals are skipped.In option $(D)$,the $2p$ orbital is skipped.Therefore,the correct configuration is $1s^2 2s^2 2p^6$.

The Aufbau principle is obeyed in which of the following electronic configurations?

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