What can be said about the radioactive decay of a single (not a large quantity) isotope?

Radioactive decay of single isotope is a spantenous decay of the nucleus of the atoms of that isotope. It is a degradation and changing process of the isotope into energy, and other forms of particles which are spintenously released from the decaying material. The radioactive decay of an isotope follows a decay constant by which its atoms reduces and has a half-life; a time through which half of its initial mass or atoms is/are lost.

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