Question

explain the electronic configuration of He and N according to Pauli and Hund's rules​

Answer 1

Answer:

Pauli's exclusion principle is based on the quantum numbers defined by Pauli. He stated that all the four quantum numbers of any two electrons in an atom can never be identical. According to Hund's rule, electrons get paired up in an orbital only after all the sub-shells consist of at least one electron in it.

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Answer 2

Answer:

Explanation:

He=1s2.

N=1s2,2s2,2p3