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Fission is a process in which a heavy nucleus of an element splits into two or more stable elements. This fission reaction is associated with the release of energy. For example, the process of U235 fission is triggered by hitting  U235 by a slow-moving neutron. It gives Barium( 144), Krypton (89) and three neutrons along with 210Mev of energy.
Fusion: Two light elements such as Hydrogen nucleus fuse or combine to form a heavier nucleus. This reaction takes place in stars and our sun as well. 
Two hydrogen nucleus combine to form heavy hydrogen along with the release of energy they continue to fuse again until a stable nucleus of Helium is formed.
The most important question is why energy is released??? Why is He stable?..and please do think many more why and How?.



Physics

What is the difference between nuclear fission and nuclear fusion?

At a height, an object has potential energy. As it slips to the ground the potential energy is mostly converted to the Kinetic energy or his speed increases. A very small part of potential energy is lost to friction( As ice hardly has any friction) 



Sumangla Kapoor

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Sumangla Kapoor