Electron cloud

Definition

The electron cloud is the region around the nucleus of an atom where electrons are most likely to be found.

Related terms

Atomic Orbital: A mathematical function that describes the wave-like behavior of either one electron or a pair of electrons in an atom.

Quantum Mechanics: The branch of physics dealing with atomic and subatomic systems which provides a mathematical description of much of the dual particle-like and wave-like behavior and interactions of energy and matter.

Valence Electrons:

The electrons in an atom's outermost orbitals; these are involved in forming bonds with other atoms.