The electron configuration for an excited atom :

1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

1 s^{2} 2 s^{2} p^{6} 3 s^{2} 3 p^{6} 4 s^{2}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

1 s^{2} 2 s^{2} p^{6} 3 s^{2} 3 p^{6} 4 s^{1}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

1 s^{2}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

1 s^{2} 2 s^{2} 2 p^{6} 3 p^{1}

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D $1 s^{2} 2 s^{2} 2 p^{6} 3 p^{1}$
The electron configuration for an excited atom
$1 s^{2} 2 s^{2} 2 p^{6} 3 p^{1}$
The ground state electronic configuration will be
$1 s^{2} 2 s^{2} 2 p^{6} 3 s^{1}$
Thus 3s orbital (being lower in energy than 3p orbital) should be filled preferentially.

Suggest Corrections

Similar questions

The electronic configuration of Ti is 1 $s^{2}$ 2 $s^{2}$ 2 $p^{6}$ 3 $s^{2}$ 3 $p^{6}$ 3 $d^{2}$ 4 $s^{2}$ and it represents

{1 s}^{2} {2 s}^{2} {2 p}^{6} {3 s}^{2} {3 p}^{6} {3 d}^{6} {4 s}^{1}

{1 s}^{2} {2 s}^{2} {2 p}^{6} {3 s}^{2} {3 p}^{6} {4 s}^{2}

{1 s}^{2} {2 s}^{2} {2 p}^{6} {3 s}^{2} {3 p}^{1}

{1 s}^{2} {2 s}^{2} {2 p}^{6} {3 s}^{2} {3 p}^{5}

{1 s}^{2} {2 s}^{2} {2 p}^{6} {3 s}^{2} {3 p}^{6} {4 s}^{1}

{(I E)}_{1}

{(I E)}_{4}

1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{5} 4 s^{1}

Join BYJU'S Learning Program