Question

multiple - choice question which principle states that electrons fill orbitals with lower energy before moving on to higher energy orbitals? hunds rule pauli exclusion principle aufbau

Explanation:

The Aufbau principle states that electrons fill orbitals of lower energy first before moving to higher - energy orbitals. Hund's rule is about the maximum number of unpaired electrons in degenerate orbitals and the Pauli Exclusion Principle states that no two electrons in an atom can have the same set of four quantum numbers.

Answer:

C. Aufbau