The electronic configuration for oxygen is written as 1s2 2s2 2p4. Which rule will this configuration be violating?

Q. The electronic configuration for oxygen is written as 1s2 2s2 2p4. Which rule will this configuration be violating?

A.            Aufbau’s principle.

B.            Hund’s rule.

C.            Pauli’s exclusion principle.

D.            None of the above.

Answer: None of the above.