key term - Nuclear Decay

Definition

Nuclear decay refers to the spontaneous transformation or disintegration of unstable atomic nuclei into more stable forms by emitting radiation.

Related terms

Alpha Decay:

A type of nuclear decay where an alpha particle (two protons and two neutrons) is emitted from the nucleus.

Beta Decay:

A type of nuclear decay where a beta particle (an electron or positron) is emitted from the nucleus.

Half-Life: The time it takes for half of a sample of radioactive material to undergo nuclear decay.