The natural decay of nuclides in a random manner. in a predictable manner. in an exact time. by a whole life.

Answer;

In a random manner

Explanation;Radioactive decay is a spontaneous process that involves the emission of alpha, beta, or gamma rays from the atomic nuclei.Unstable nuclides loses energy by emitting radiation in the form of particles such as alpha, or beta particles to attain stability. Natural decay of unstable nuclides occurs randomly and spontaneously for the nuclides to attain stability.

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