Which principle states that no two electrons in an atom can have the same set of four quantum numbers?
A
Heisenberg Uncertainty Principle
B
Superposition Principle
C
Aufbau Principle
D
Pauli Exclusion Principle
Correct Answer: Option D — Pauli Exclusion Principle
Explanation:
The Pauli Exclusion Principle states that no two electrons in an atom can have identical sets of all four quantum numbers meaning each orbital can hold at most two electrons with opposite spins.