The orbital diagram in which the Aufbau princ | vedclass

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(B) According to the Aufbau principle,electrons fill orbitals in order of increasing energy. The $2s$ orbital has lower energy than the $2p$ orbitals.

Vedclass · Accepted Answer

$2s: \uparrow, 2p_x: \uparrow \downarrow, 2p_y: \uparrow, 2p_z: \uparrow$

Vedclass · Answer

(B) According to the Aufbau principle,electrons fill orbitals in order of increasing energy. The $2s$ orbital has lower energy than the $2p$ orbitals.Therefore,the $2s$ orbital must be completely filled (containing $2$ electrons) before any electrons enter the $2p$ orbitals.In option $(B)$,the $2s$ orbital contains only $1$ electron while the $2p$ orbitals are already being filled,which violates the Aufbau principle.

The orbital diagram in which the Aufbau principle is violated is:
$2s$ $2p_x$ $2p_y$ $2p_z$

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The orbital diagram in which the Aufbau principle is violated is:$2s$ $2p_x$ $2p_y$ $2p_z$