SUMMARY
- Electron spin: diamagnetism vs. paramagnetism
- Pauli exclusion principle - allowable quantum numbers
- configurations
- spectroscopic notation
- orbital box notation
- Hund’s rule - electron filling rules
- configurations of ATOMS: the basis for chemical valence
- period 2 ; groups
- transition metals
- configurations and properties of IONS
- periodic trends in :
- size
- ionization energies
- electron affinities