GENERAL KNOWLEDGE

Detailed explanation-1: -Radon is a radioactive substance that undergoes spontaneous emission of radiation due to its unstable nuclei. Atoms of a radioactive element can change into atoms of another element by emitting radiation. A proton is a subatomic particle carrying a charge equal to but opposite that of an electron.

Detailed explanation-2: -Radioactivity is the spontaneous emission by unstable nuclei of particles or electromagnetic radiation, or both. Isotopes that spontaneously decay in this way are called radioactive isotopes (or radioisotopes). Natural radioactivity is the decay of radioactive isotopes found in nature.

Detailed explanation-3: -Instability of an atom’s nucleus may result from an excess of either neutrons or protons. A radioactive atom will attempt to reach stability by ejecting nucleons (protons or neutrons), as well as other particles, or by releasing energy in other forms.

Detailed explanation-4: -The unstable nucleus of radioactive atoms emit radiation. When this occurs, a new atom and element are formed. This process is called radioactive decay. It continues until the forces in the unstable nucleus are balanced.