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Electron Configuration
the arrangement of electrons in their orbitals around the nucleus of an atom.
The Aufbau Principle
states tat electrons will always occupy the lowest energy level that is available. (ground state)
The Pauli Exclusion Principle
States that any two electrons in the same atom cannot have the same spin.
Hund's Rule
states that, in orbitals of equal energy, electrons will first occupy different orbitals before pairing up.