Radioactive decay is often described as being spontaneous
PHYSICS · Single correct · A Level · Physics · Nuclear physics · Nuclear physics
Problem
Radioactive decay is often described as being spontaneous. This means that
(1) the activity of a sample of radioactive material does not follow a mathematical description.
(2) any nucleus could decay at any time.
(3) in a sample of radioactive nuclei, all of the nuclei will decay after two half-lives.
(4) all the nuclei in a sample will decay at the same time.