Answer
Nuclear fisssion: Nuclear fission is a process by which a heavy nucleus is divided into two roughly equal parts/roughly equal sizes, accompanied with the evolution of a vast amount of energy, when bombarded with a suitable projectile like a neutron, alpha particle, deuterion etc.
Nuclear fusion reaction: Isotopes of very light elements may fuse together to produce heavier nuclide with the liberation of vast amounts of energy; this process is known as nuclear fusion.
Critical mass: The smallest mass of fissionable material needed for a chain reaction is called critical mass.
Work Step by Step
Nuclear fisssion: Nuclear fission is a process by which a heavy nucleus is divided into two roughly equal parts/roughly equal sizes, accompanied with the evolution of a vast amount of energy, when bombarded with a suitable projectile like a neutron, alpha particle, deuterion etc.
Nuclear fusion reaction: Isotopes of very light elements may fuse together to produce heavier nuclide with the liberation of vast amounts of energy; this process is known as nuclear fusion.
Critical mass: The smallest mass of fissionable material needed for a chain reaction is called critical mass.
