Which of the following is true for Pauli Exclusion Principle?

No two electrons of the same atom can have all the four quantum numbers same.

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The lowest-energy orbitals are filled first.

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The orbitals of equal energy (degenerate) are occupied with one electron each before pairing of electrons starts.

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None of the above

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Solution

The correct option is A No two electrons of the same atom can have all the four quantum numbers same.
According to Pauli Exclusion Principle, no two electrons of the same atom can have all the four quantum numbers same.
Aufbau principle: The lowest-energy orbitals are filled first.
Hund’s rule: The orbitals of equal energy (degenerate) are occupied with one electron each before pairing of electrons starts.

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Similar questions

Rules	Statements
A) Hund's rule of maximum multiplicity	P) No two electrons in an atom can have the same set of quantum numbers
B) Aufbau principle	Q) Half-filled and completely filled orbitals have extra stability
C) Pauli's exclusion principle	R) Pairing of electrons in the orbitals belonging to the same subshell does not take place until each orbital is singly occupied
D) Hiesenberg's Uncertainity Principle	S) It is impossible to determine the exact position and exact momentum of a subatomic particle simultaneously
	T) In the ground state of atoms, orbitals are filled in the order of their increasing energies

Rules	Statements
A) Hund's rule of maximum multiplicity	P) No two electrons in an atom can have the same set of quantum numbers
B) Aufbau principle	Q) Half-filled and completely filled orbitals have extra stability
C) Pauli's exclusion principle	R) Pairing of electrons in the orbitals belonging to the same subshell does not take place until each orbital is singly occupied
D) Hiesenberg's Uncertainity Principle	S) It is impossible to determine the exact position and exact momentum of a subatomic particle simultaneously
	T) In the ground state of atoms, orbitals are filled in the order of their increasing energies

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