Question

portions of orbital diagrams representing the ground - state electron configurations of certain elements are shown here: part 1 of 2 which violate the pauli exclusion principle? check all that apply.

Explanation:

Step1: Recall Pauli - Exclusion Principle

The Pauli - Exclusion Principle states that no two electrons in an atom can have the same set of four quantum numbers. In an orbital diagram, this means that each orbital can hold a maximum of 2 electrons with opposite spins.

Step2: Analyze each option

• For the first option: There are single - occupancy orbitals and double - occupancy orbitals with opposite spins. It does not violate the Pauli - Exclusion Principle.
• For the second option: In the second orbital, there are two electrons with the same spin. This violates the Pauli - Exclusion Principle as electrons in the same orbital must have opposite spins.
• For the third option: Each orbital has a maximum of 2 electrons with opposite spins. It does not violate the Pauli - Exclusion Principle.
• For the fourth option: Each orbital has a maximum of 2 electrons with opposite spins. It does not violate the Pauli - Exclusion Principle.

Answer:

The second option violates the Pauli exclusion principle.