Answer to Question #198502 in General Chemistry for Achintya

Question

. If the nitrogen atom had electronic configuration 1s7 , it would have energy lower than that of the normal ground state configuration 1s2 2s2 2p3 , because the electrons would be closer to the nucleus. Yet 1s7 is not observed. It violates (A) Heisenberg’s uncertainty principle (B) Hund’s rule (C) Pauli exclusion principle (D) Aufbau rule

Answer 1

(C) Pauli exclusion principle