In stars, nucleons (protons and neutrons) form nuclei of atoms via a series of fusion

Question

reactions. If for a particular fusion reaction more energy is given off than is required to
make it proceed, does the final nucleus have a higher or lower rest mass than the sum of
the rest masses of its constituent nucleons? and why is that so??

can someone please explain it to me?

Answer 1

Lower. Mass must be lost if energy is to be released, in fustion or fission reactions. There may be more than one product nucleus, and neutrons also.

Answer 2

thanks drwls. but the person who posted the question should have mentioned the fact its an assignment question. you must only post a response to assessed questions after their due date.