key term - Radioactive Decay

Definition

Radioactive decay is the process by which unstable atomic nuclei release energy or particles to become more stable. It involves the spontaneous transformation of one element into another through emission of radiation.

Related terms

Half-life:

The half-life of a radioactive substance is the time it takes for half of its atoms to undergo decay. It helps determine the rate at which radioactive substances decay.

Alpha Particle:

An alpha particle is made up of two protons and two neutrons emitted during certain types of radioactive decay.

Beta Decay:

Beta decay occurs when an unstable nucleus emits either an electron (beta minus) or positron (beta plus) to achieve stability.