Atomic Structure Question 88

In a potassium atom, electronic energy levels are in the following order: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ [EAMCET 1979; DPMT 1991]

Options:

A) $ 4s>3d $

B) $ 4s>4p $

C) $ 4s<3d $

D) $ 4s<3p $

Show Answer

Answer:

Correct Answer: C

Solution:

According to Aufbau’s principle.



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