Find the energy liberated in the reaction: 223Ra→209Pb+14C The atomic masses needed are as follows: 223Ra223.018u 209Pb208.981u 14C14.003u
31.654 MeV
32.654 MeV
30.054 MeV
None of these
Here, Δm=223.018−208.981−14.003=0.034 u Hence, binding energy =0.034×931=31.654 MeV