Question

no two electrons in the same atom can have the same four quantum numbers. hunds rule noble gas notation pauli exclusion principle aufbau principle

Explanation:

The Pauli exclusion principle states that no two electrons in the same atom can have the same set of four quantum numbers. This principle is a fundamental concept in quantum mechanics and atomic theory. Hund's rule is about the filling of degenerate orbitals (electrons occupy orbitals singly before pairing). Noble gas notation is a shorthand way to write electron configurations. The Aufbau principle is about building up electron configurations by filling orbitals in order of increasing energy.

Answer:

Pauli exclusion principle