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Aufbau Principle In atoms in their ground state electrons occupy lowest available energy levels
Hund's Rule of Maximum Multiplicity Electrons fill orbitals singly before filling in pairs
Pauli Exclusion Principle No more than two electrons may occupy an orbital and they must have opposite spin
Heisenberg's Uncertainty Principle It is impossible to know both the velocity and position of an electron at the same time
Orbital A region in space with a high probability of finding an electron
Sub-level A subdivision of a main energy level consisting of one or more orbitals of the same energy
Created by: JackEatonK98