Which of the following statements concerning the Pauli exclusion principle is/are CORRECT?
1)If two electrons occupy the same orbital they must have opposite spins.
2)No two electrons in an atom can have the same four quantum numbers.
3)Electrons with opposing spins are attracted to each other.

Question

Quizplus · Accepted Answer

Statement 1 is correct as per the Pauli exclusion principle, which states that no two electrons in an atom can have the same set of four quantum numbers, including their spin quantum number. Therefore, if two electrons are occupying the same orbital, they must have opposite spins to satisfy the Pauli exclusion principle.
Statement 2 is also correct as it is an extension of the Pauli exclusion principle, which implies that each electron in an atom can be identified by a unique set of four quantum numbers that distinguish it from all other electrons in the atom.
Statement 3 is incorrect as the electrons with opposing spins have no attractive force between them because they are already occupying the same orbital in opposite directions, and their spins are balanced.

Which of the Following Statements Concerning the Pauli Exclusion Principle