Question

Which of the following states that two electrons can occupy the same orbital only if they have opposite spins?
A.
Hund’s rule
B.
Dalton’s theory
C.
Aufbau principle
D.
DeBroglie’s theory
E.
Pauli exclusion principle

Answer 1

Answer:

The correct answer is (E)

Explanation:

Pauli Exclusion Principle

Pauli exclusion principle states that in a single atom no two electrons will have an identical set or the same quantum numbers (n, l, ml, and ms). To put it in simple terms, every electron should have or be in its own unique state (singlet state).

There are two salient rules that the Pauli Exclusion Principle follows:

Only two electrons can occupy the same orbital.

The two electrons that are present in the same orbital must have opposite spins or it should be antiparallel.