Principles of quantum mechanics

• Main four ideas of quantum theory
• Hund’s rule
• Aufbau’s principle
• Pauli exclusion principle

Electronic configuration + Exceptions

• Transition metals with in group 6 (Cr, Mo, W)
• Transition metals in group 11 (Cu, Ag, Au)
• Transition metal cations

What quantum numbers represent

Resonance structures and formal charge

• Why do resonance structures form?
• How to distribute formal charge?

Ionization energy

Intermolecular forces $\to$ Physical properties

Rutherford and Bohr

• Rutherford main ideas
• Why did quantum mechanics replace the Bohr model?

VSEPR theory