Question

The electron pairing in the degenerate orbitals does not take place until all the available orbitals contain one
electron each. This is
Pauli's exclusion principle
Hund's rule
Aufbau principle
Bohr rule​

Answer 1

Answer:

Hund's rule

Explanation:

aufbau have building up principle

Bohr have hydrogen spectrum theory

Pauli's rule is about electrons having opposite spin

Answer 2

Answer:

Hund' S rule

Explanation:

This rule deals with the filling of electron in the orbitals having equal energy (degenerate orbitals ) . According to this rule electro Pairing in P,d , and f orbitals cannot occur until each orbital of a given Subshell contain one electron each or is singly occupied...