Which of the following states that two electrons can occupy the same orbital only if they have opposite spins?

Question

A.
Hund’s rule
B.
Dalton’s theory
C.
Aufbau principle
D.
DeBroglie’s theory
E.
Pauli exclusion principle

Answer 1

The correct answer is E. Pauli exclusion principle.

The Pauli exclusion principle states that no two electrons in an atom can have the same set of quantum numbers, meaning that two electrons can occupy the same orbital only if they have opposite spins.