Nuclear Gauge Safety Certification 2025 – 400 Free Practice Questions to Pass the Exam

Radioactive decay typically occurs in the nucleus of an atom. This process involves the transformation of an unstable atomic nucleus into a more stable configuration through the emission of radiation. During radioactive decay, particles such as alpha particles or beta particles, as well as gamma rays, are released, which fundamentally alters the identity and properties of the original element.

The nucleus contains protons and neutrons, and it's this central part of the atom that holds most of its mass and the majority of its stability. When an atom is unstable, it will undergo radioactive decay to achieve a stable state, which is solely a function of processes occurring within the nucleus. Other options, such as processes involving electrons or atomic bonds, do not pertain to the phenomenon of radioactive decay. Thus, focusing on the nucleus is key to understanding the nature of radioactive decay and the stability of elements.