Question

b. If both the number of protons and number of neutrons are conserved in each nuclear reaction, in what way is mass converted into energy or vice-versa in a nuclear reaction? ​

Answer 1

In nuclear reactions, the numbers of proton and neutron is conserved and so is their rest mass on either side. However, the total binding energy on either side is not necessarily same and this difference in the binding energy of the reaction is released or absorbed in the form of energy.

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