Electron Configuration Rules Flashcards
1
Q
Pauli Exclusion Principle
A
No two electrons in an atom can have the same four quantum numbers.
2
Q
Aufbaf Principle
A
Each added electron enters the lowest energy orbital available. Exceptions to this principle are Cr, Cu, Ag, Au.
3
Q
Hund’s Rule
A
When filling degenerate orbitals, electrons fill them singly first, with parallel spins.
