The answer to your proposed question is Neutron. This is because the atomic mass unit of a neutron is 1 and so it would contribute to the overall mass of the atom.
I hope this answer helped you!
Answer:
When energy is transformed from one from to another, energy is transferred form one form to another.
Explanation:
While the transformation of energy occur, total energy remains constant.
This is the LAW OF CONSERVATION OF ENERGY.
