Chemistry & Environmental Dictionary

Quantum - Quantum Number


The tiniest amount of physical energy that can exist independently, especially a finite amount of electromagnetic radiation.

Quantum (wave) Mechanics

A branch of physics that describes the wave properties of subatomic particles mathematically.

Quantum Number

The basic unit of electromagnetic energy. This characterizes the wave properties of electrons, as distinct from their particulate properties. This determines the principle energy level of an electron.

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