Question

question 3 (1 point) which of the following is an incorrect way to write an electron configuration? a 1s²2s¹2p⁶ b 1s²2s²2p³ c 1s²2s²2p⁶ d 1s²2s²2p⁴

Explanation:

Electron - filling follows the Aufbau principle, Pauli - exclusion principle, and Hund's rule. The 2s orbital must be completely filled (with 2 electrons) before electrons enter the 2p orbital. In option a, the 2s orbital has only 1 electron while the 2p orbital is filled, which is incorrect.

Answer:

A. 1s²2s¹2p⁶