Nuclei

Energy released in nuclear fission is due to

1. some mass is converted into energy
2. total binding energy of fragments is more than the binding energy of parental element
3. total binding energy of fragments is less than the binding energy of parental element
4. total binding energy of fragments is equal to the binding energy of parental element

Answer

(1) some mass is converted into energy

Solution

As per NCERT, in the fission of 23592U the total mass of the products is less than the total mass of the reacting nucleus and neutron.

This mass defect is converted into energy according to Einstein's relation:

E = m c2

∴ The energy released in nuclear fission is due to conversion of some mass into energy.

Answer: (1)