Radioactivity is a spontaneous phenomenon. Explain .
Radioactivity is a spontaneous phenomenon because certain atomic nuclei, known as radioactive isotopes, are inherently unstable. They have an imbalance of protons and neutrons, which leads to their instability. In order to achieve a more stable state, these nuclei undergo radioactive decay, emitting radiation in the process. This decay can occur in three main ways: alpha decay, beta decay, and gamma decay. The decay process is not influenced or controlled by external factors but happens...