Differences between Fission and Fusion reaction

*Nuclear fission* 

1- Heavy nuclei split into lighter nuclei of comparable atomic masses

2- nuclei of heavy elements undergo fission

3- The reaction initiates at normal temperature

4- The fission process liberates about 200 MeV energy

5- Fast neutrons are also released

6- Fuel is either solid or liquid 

*Nuclear fusion..*

1- lighter nuclei fuse to form heavy nuclei

2- nuclei of light elements are in involved in the process of fusion

3- Fusion initiates at 10^8 K

4- the energy released in 24 MeV

5- nature of the ejected particles depends uopn the type of thermonuclear reaction

6- Fuel is in plasma state