Question

write a note on nuclear fusion, nuclear fission and radio activity​

Answer 1

Explanation:

▦▦●Nuclear fusion is the process of making a single heavy nucleus (part of an atom) from two lighter nuclei. ... Hydrogen atoms are fused together to make helium. This releases lots of energy. This energy powers the heat and light of the star.

▦▦●Nuclear fission is a process in which an unstable nucleus splits into two nuclides and emits neutrons. Two types of fission reactions are possible: spontaneous fission and induced fission. We saw earlier that spontaneous fission occurs in some radionuclides, at least one of which, californium-252, occurs naturally

▦▦●As its name implies, radioactivity is the act of emitting radiation spontaneously. This is done by an atomic nucleus that, for some reason, is unstable; it "wants" to give up some energy in order to shift to a more stable configuration.