Question

which electron configuration represents a violation of the aufbau principle? * (0.5 points)

Explanation:

The Aufbau Principle states that electrons fill atomic orbitals of the lowest available energy levels before occupying higher levels. In option B, the 2s orbital is not fully - filled (it should have 2 electrons with opposite spins) before electrons start to occupy the 2p orbitals.

Answer:

B.