Which of the following electron configurations is impossible? A)1 s ²2 s ²2 p ⁶3 s ²3 p ⁴ B)1 s ²2 s ²2 p ⁵3 s ¹3 p ⁴ C)1 s ²2 s ²2p ⁶3 s ²3 p ⁶3 d ¹⁰4 s ² D)1 s ²2 s ²2 p ⁶3 s ³3 p ⁴ E)1 s ¹2 s ²2 p ⁶3 s ²3 p ⁴

Question

Quizplus · Accepted Answer

The electron configuration 1s²2s²2p⁶3s³3p⁴ is impossible because it violates the Aufbau principle. The Aufbau principle states that electrons fill orbitals in order of increasing energy. The 3s orbital has a higher energy than the 3p orbital, so the 3s orbital should be filled before the 3p orbital.

Which of the Following Electron Configurations Is Impossible