Question 4 of 6 Map A pling sider the following neutroninduc

Question 4 of 6 Map A pling sider the following neutron-induced fission reaction: 154 Ge Nd+ 2n 92 32 How much energy, in megaelectronvolts, is released in this reaction? A table of isotope masses is available here. Number MeV AE O Previous Give Up & View Solution Check Answer Next Ext Hint

Solution

Mass of neutron m = 1.008665 u

Mass of U 235 is m \' = 235.0439299 u

mass of 80 Ge is m \" = 79.92537 u

Mass of 154 Nd is m\"\' = 153.92948 u

Mass defect dm = (m+m\') -(m\"+m\"\'+2m)

                        = m\'-m\"-m\"\' -m

                       = 0.1804149 u

We know 1 u = 931.5 MeV

So, energy released E = dm(931.5 MeV)

                                 = 168.05 MeV