Which electron configuration represents a violation of the Auf Bau Principle? 

• A.
• B.
• C.
• D.

Answer: (B)

Verified step by step guidance

1. The Aufbau Principle states that electrons fill orbitals starting from the lowest energy level to the highest. This means electrons will fill the 1s orbital before the 2s orbital, the 2s before the 2p, and so on.
2. Examine each electron configuration image to determine if the orbitals are filled in the correct order according to the Aufbau Principle.
3. In the first image, check if the 1s orbital is filled before the 2s orbital, and the 2s before the 2p orbitals. Ensure that each orbital is filled before moving to the next higher energy orbital.
4. In the second image, verify that the 1s orbital is filled before the 2s orbital, and the 2s before the 2p orbitals. Look for any skipped orbitals or incorrect filling order.
5. Continue this process for the third and fourth images, ensuring that each follows the correct order of filling according to the Aufbau Principle. Identify any configuration where an orbital is skipped or filled out of order, which would indicate a violation of the principle.