Light, waves and atoms

A wave is a propagating disturbance that can transfer energy and information without requiring a net transport of matter over the same distance.

A wave is a propagating disturbance that can transfer energy and information without requiring a net transport of matter over the same distance.

Spectroscopy studies how matter emits, absorbs or scatters electromagnetic radiation as a function of wavelength, frequency or energy.

Spectroscopy studies how matter emits, absorbs or scatters electromagnetic radiation as a function of wavelength, frequency or energy.

Electron configuration describes how electrons occupy available atomic states. This arrangement is central to periodic trends and helps explain why elements in the same group often react in related ways.