The Statement That "The Lowest-Energy Configuration for an Atom Is

Multiple Choice

The statement that "the lowest-energy configuration for an atom is the one having the maximum number of unpaired electrons allowed by the Pauli principle in a particular set of degenerate orbitals" is known as

A) the aufbau principle.
B) Hund's rule.
C) the Pauli exclusion principle.
D) Heisenberg uncertainty principle.
E) the quantum model.