Question

32
what rule is violated in electron configuration \b\?
(1 point)
law of conservation of mass
aufbau principle
pauli exclusion principle
hunds rule

Explanation:

Hund's rule states that electrons will fill degenerate orbitals (orbitals of the same energy) singly before pairing up. In configuration "b", electrons are paired in an orbital when there is an empty degenerate orbital available. This violates Hund's rule. The Law of conservation of mass is not related to electron configuration. The Aufbau principle is about filling orbitals from the lowest energy to higher energy. The Pauli exclusion principle states that no two electrons in an atom can have the same set of four quantum numbers (which is not violated here as electrons in the same orbital have opposite spins).

Answer:

Hund's rule