Which of the following electronic configuration is incorrect?

Question

Which of the following electronic configuration is incorrect? (A) 1 s2, 2 s2, 2 px2, 2 py2, 2 pz2, 3 s2, 3 px1 (B) 1 s2, 2 s1, 2 px1, 2 py1, 2 pz1 (C) 1 s2, 2 s2, 2 p6, 3 s2, 3 p6, 3 d6, 4 s2 (D) 1 s2, 2 s2, 2 p6, 3 s2, 3 px1, 3 py1, 3 pz 1

Tardigrade Admin · Accepted Answer

Before 2s completely filled electrons are not further added into higher energy level. Therefore Option 2 incorrect.

Q. Which of the following electronic configuration is incorrect?

$1 s^{2}, 2 s^{2}, 2 p_{x}^{2}, 2 p_{y}^{2}, 2 p_{z}^{2}, 3 s^{2}, 3 p_{x}^{1}$

$1 s^{2}, 2 s^{1}, 2 p_{x}^{1}, 2 p_{y}^{1}, 2 p_{z}^{1}$

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

$1 s^{2}, 2 s^{2}, 2 p^{6}, 3 s^{2}, 3 p_{x}^{1}, 3 p_{y}^{1}, 3 p_{z}^{1}$

Before 2s completely filled electrons are not further added into higher energy level. Therefore Option 2 incorrect.

Q. Which of the following electronic configuration is incorrect?

1s2,2s2,2px2​,2py2​,2pz2​,3s2,3px1​

1s2,2s1,2px1​,2py1​,2pz1​

1s2,2s2,2p6,3s2,3p6,3d6,4s2

1s2,2s2,2p6,3s2,3px1​,3py1​,3pz​1

Before 2s completely filled electrons are not further added into higher energy level. Therefore Option 2 incorrect.

$1 s^{2}, 2 s^{2}, 2 p_{x}^{2}, 2 p_{y}^{2}, 2 p_{z}^{2}, 3 s^{2}, 3 p_{x}^{1}$

$1 s^{2}, 2 s^{1}, 2 p_{x}^{1}, 2 p_{y}^{1}, 2 p_{z}^{1}$

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

$1 s^{2}, 2 s^{2}, 2 p^{6}, 3 s^{2}, 3 p_{x}^{1}, 3 p_{y}^{1}, 3 p_{z}^{1}$