Question

Explain electronic configuration of He and N according to Pauli
and Hund's principle.​

Answer 1

Answer:Hopefully this helped and please mark this as Brainliest : )

Explanation: Hund's Rule states that if 2 or more degenerate (i.e. same energy) orbitals are available, one electron goes into each until all of them are half full before pairing up . ... The Pauli Exclusion Principle states that no two electrons can be identified by the same set of quantum numbers. 4.5. 6 votes.

Answer 2

Answer:

$\bigstar\:\underline{\boxed{\bf{\red{Pauli\:exclusion\:principle:}}}}$

• No two electrons in an atom can have the same set of four quantum numbers.
• It can also be stated as : "only two electrons may exist in the same orbitak and these electrons must have opposite spin."

$\bigstar\:\underline{\boxed{\bf{\purple{Hund's\:rule\:of\:maximum\:multiplicity:}}}}$

• Pairing of electrons in the orbitals belonging to the same subshell (p, d or f) does not take until each orbital belonging to that subshell has got one electron each i.e., it is singly occypied.

✴ Electronic configuration of He :

$\dag\:\underline{\boxed{\bf{He\:(Z=2) : 1s^2}}}$

✴ Electronic configuration of N :

$\dag\:\underline{\boxed{\bf{N\:(Z=7) : [He]2s^22p^3}}}$