Which of the following arrangements represents the correct order of electronic energy level?
- 1s 2p 2s 3p 3s 3d 4s
- 1s 2s 2p 3s 3p 3d 4s
-
1s 2s 2p 3s 3p 4s 3d
- 1s 2s 3s 2p 3p 4s 3d
The correct answer is: C
Explanation
the correct order of electronic energy level is OPTION C according to the Aufbau principle.