what are the two processes by which nuclear energy is released? briefly describe the processes.
Some examples of common radiactive isotopes found naturally that have this property are 40K (potassium-40) which is present in seawater and many salts, 14C (Carbon-14) and Uranium and Thorium. Nuclear Fission energy is released when a very heavy atomic nucleus absorbs a neutron and splits into two lighter fragments. The energy release in this process is enormous. It is 10 million times greater than the energy released when one atom of carbon from a fossil fuel is burned.
In nuclear physics, nuclear fusion is a reaction in which two or more atomic nuclei come close enough to form one or more different atomic nuclei and subatomic particles (neutrons or protons). The difference in mass between the products and reactants is manifested as the release of large amounts of energy.