Question

"No two electrons in an atom can have the same set of four quantum numbers." This is known as

• A. Hund's rule
• B. Aufbau principle
• C. Pauli's exclusion principle
• D. Heisenberg's principle
• E. Fajan's rule

Answer 1

The Correct Option is C

The statement "No two electrons in an atom can have the same set of four quantum numbers" is known as the:

Pauli's Exclusion Principle

This principle was formulated by Wolfgang Pauli in 1925 and is fundamental to understanding electron configurations in atoms.

According to this principle, each electron in an atom is described by a unique set of four quantum numbers:

• n: Principal quantum number
• l: Azimuthal (angular momentum) quantum number
• m_l: Magnetic quantum number
• m_s: Spin quantum number

Correct Answer: (C) Pauli's exclusion principle