Question:
"No two electrons in an atom can have the identical set of four quantum numbers." The statement is known as
"No two electrons in an atom can have the identical set of four quantum numbers." The statement is known as
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This statement is the original wording of a famous exclusion principle.
Updated On: Nov 13, 2026
- Pauli's exclusion principle.
- Hund's rule.
- Aufbau rule.
- Heisenberg uncertainty principle.
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept
Each electron in an atom is described by four quantum numbers \(n, l, m_l, m_s\).
Step 2: Statement
The rule that no two electrons in an atom can have the same set of all four quantum numbers is Pauli's exclusion principle.
Step 3: Compare the options
Hund's rule is about filling degenerate orbitals singly, the Aufbau rule is about filling order, and Heisenberg's principle is about uncertainty in position and momentum.
Final Answer:
The statement is Pauli's exclusion principle. \[ \boxed{\text{(A) }\text{Pauli's exclusion principle.}} \]
Each electron in an atom is described by four quantum numbers \(n, l, m_l, m_s\).
Step 2: Statement
The rule that no two electrons in an atom can have the same set of all four quantum numbers is Pauli's exclusion principle.
Step 3: Compare the options
Hund's rule is about filling degenerate orbitals singly, the Aufbau rule is about filling order, and Heisenberg's principle is about uncertainty in position and momentum.
Final Answer:
The statement is Pauli's exclusion principle. \[ \boxed{\text{(A) }\text{Pauli's exclusion principle.}} \]
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