GENERAL KNOWLEDGE

Detailed explanation-1: -Radioactive nuclei are nuclei that are unstable and that decay by emitting energetic particles such as photons, electrons, neutrinos, protons, neutrons, or alphas (two protons and two neutrons bound together). Some of these particles are known as ionizing particles.

Detailed explanation-2: -Atoms are radioactive if the protons and neutrons in the nucleus are configured in an unstable way. For low numbers of protons (Z), the number of neutrons (N) required to maintain a stable balance is roughly equal to the number of protons.

Detailed explanation-3: -Atoms seek to be stable; so, to get to a more stable state, the atom expels energy from the nucleus in the form of a particle or ray. This process is known as radioactivity, the unstable atom is said to be a radioactive atom, and the energy that’s released is radiation.

Detailed explanation-4: -Alpha–Unstable nuclei frequently emit alpha particles, actually helium nuclei consisting of two protons and two neutrons. By far the most massive of the decay particles, it is also the slowest, rarely exceeding one-tenth the velocity of light.

Detailed explanation-5: -The nuclei of radioisotopes are unstable, so they constantly decay and emit radiation. In elements with more than 83 protons, all of the isotopes are radioactive.