Which of the following electronic configuration is impossible ?
$1 s^{2}, 2 s^{2}, 2 p^{6}$
$1 s^{2}, 2 s^{2}, 2 p^{7}$
$1 s^{2}, 2 s^{2}$
$1 s^{2}, 2 s^{2}, 2 p^{5}$

Question

Which of the following electronic configuration is impossible -1s-2- 2s-2- 2p-6-1s-2- 2s-2- 2p-7-1s-2- 2s-2-1s-2- 2s-2- 2p-5-

Toppr Admin · Accepted Answer

P subshell with 3 orbitals can accomodate 6 electrons only- The seventh electron cannot enter- Therefore 1s22s22p7 is not possible-

Which of the following electronic configuration is impossible ?1s2,2s2,2p61s2,2s2,2p71s2,2s21s2,2s2,2p5