Khan Academy

Ionization energy: period trend (K-A)

Periodic trends and Coulomb's law (K-A)

Worked example: Identifying an element from successive ionization energies (K-A)

Introduction to photoelectron spectroscopy (K-A)

Valence electrons and ionic compounds (K-A)

Worked example: Finding the formula of an ionic compound (K-A)

sp hybridization (K-A)

sp² hybridization (K-A)

sp³ hybridization (K-A)

Steric number (K-A)

Worked examples: Finding the hybridization of atoms in organic molecules (K-A)

Bond length and bond energy (K-A)

Lattice energy (K-A)

Worked example: Interpreting potential energy curves of diatomic molecules (K-A)

Drawing Lewis diagrams (K-A)

Exceptions to the octet rule (K-A)

Worked example: Lewis diagram of formaldehyde (CH₂O) (K-A)

Worked example: Lewis diagram of the cyanide ion (CN⁻) (K-A)

Worked example: Lewis diagram of xenon difluoride (XeF₂) (K-A)

Formal charge (K-A)

Resonance (K-A)

Worked example: Using formal charges to evaluate nonequivalent resonance structures (K-A)

Representing ionic solids using particulate models (K-A)

Representing alloys using particulate models (K-A)

Covalent bonds (K-A)