Question

explain the electronic configuration of He and N according to pauli and Hund's principle

Answer 1

Answer:

In The Attachment

____________

Answer 2

Pauli's Exclusion Principle:NO 2 e can have the all 4 quantum nos same

Hunds Rule: e are assigned to other degenerate orbitals(px,py,pz) rather than pairing them in the same orbital. So suppose u have 2 e then one will go in px and 1 one will go in py..both will not go in px

Following these rules alongwith aufbaus principle:

He: 1s2

N: 1s2,2s2,2p3