Question

If no. Of protons and neutrons are conserved in rxn how mass converted

Answer 1

As the proton number and neutron number gets conserved, we see that total rest mass of neutron and protons will be similar on both sides in a nuclear reaction. Further, it is examined that total binding energy of nuclei on left side should not be same as that of right hand side where difference among binding energy will result in release of energy in a reaction.

21H + 21H → 32H + 12n + energy