1. The splitting of heavy nucleus into two nucleus is called fission.
2. E = 200 Mev
= 200 × 10-6 ev
E = 200 × 106 x 1.6 x 10-19J
= 3.2 x 10-11J.
3. Number of fission
\(n=\frac{Total\,energy}{energy\,per\,fission}\) = \(\frac{1\times10^6}{3.2\times10^{-11}}\)
= 3.3 x 1010