Question

question 8 (1 point) which of the following is an incorrect way to write an electron configuration? a 1s²2s¹2p⁶ b 1s²2s²2p³ c 1s²2s²2p⁴ d 1s²2s²2p⁶

Explanation:

In electron - configuration, the s orbital fills before the p orbital. The 2s orbital must be filled with 2 electrons before electrons enter the 2p orbital. In option a, having 2s¹ instead of 2s² before filling the 2p orbital is incorrect as per the Aufbau principle which states that electrons fill orbitals in order of increasing energy.

Answer:

A. 1s²2s¹2p⁶