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What is the significance of Mass excess(why is it used)?

What is the significance of Mass excess(why is it used)?

Grade:11

2 Answers

Abhishek Damodara
18 Points
10 years ago

mass excess is a measure of nuclear bindin energy

Ramesh Babu Gattu
19 Points
10 years ago

dear abhinav,

this is a relative term, mass of the products compared to mass of the reactants. In nuclear reactions, energy is needed to overcome the coulomb repulsions in bringing the nucleons together to form the nucleus ( as the product nucleus is to be formed again, which is different from the one before). Then, who is going to supply this energy? it has to provide itself, luckily for us the explanation is easy using mass-energy relation by which a small equivalent mass is converted to energy in forming the new nucleus and also some energy is released.  hence, a mass difference or mass excess comes into picture.

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