Question

How is radioactive decay related to half life?

Answer 1

Radiation: Decay and Half-life. As mentioned previously, radioactive decay is the disintegration of an unstable atom with an accompanying emission of radiation. As a radioisotope atom decays to a more stable atom, it emits radiation only once. ... For this reason, radioactive sources become weaker with time.

Answer 2

Radioactive Decay – Measuring the Age of the Solar System The half-life of a radioactive element is the amount of time it takes for half of the atoms in a sample to decay from an unstable state to a stable one.