A molecule emitting a quantum of radiation Whiteboard exercise Play

Absorption and emission of gases Student activity Play

Assigning electrons to atomic orbitals Student activity Play

Atomic states Animation Play

Bohr orbits Student activity Play

Bohr orbits Whiteboard exercise Play

Bohr's atomic model Student activity Play

Characteristic radiation Animation Play

Electron configuration and the periodic table (1) Student activity Play

Electron shells and subshells (2) Student activity Play

Electron spin. Pauli's exclusion principle Student activity Play

Energy levels Student activity Play

Energy of electromagnetic radiation Student activity Play

Number of electrons in the orbital Animation Play

Orbitals Student activity Play

Planck's equation Animation Play

Planck's postulates Student activity Play

Quantum atom model Animation Play

Roentgen spectra of elements – characteristic radiation Student activity Play

Spontaneous and stimulated emission Student activity Play

Spontaneous emission Animation Play

The electron spin quantum number Animation Play

The energy levels of hydrogen atom Student activity Play

The energy levels of hydrogen atom Whiteboard exercise Play

The principal and azimuthal quantum numbers Animation Play