= Radioactive decay
{wiki=Radioactive_decay}
Radioactive decay is the process by which an unstable atomic nucleus loses energy by emitting radiation. This process results in the transformation of the original atom (known as the parent isotope) into a different atom or a different isotope of the same element (known as the daughter isotope). Radioactive decay can occur in several forms, including: 1. **Alpha Decay**: The nucleus emits an alpha particle, which consists of two protons and two neutrons (similar to a helium nucleus).
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