Two isotopes of a certain element have binding energies that differ by 5.4810 mev. the isotope with the larger binding energy contains one more neutron than the other isotope. find the difference in atomic mass between the two isotopes, by taking the energy equivalent of 1 u to be 931.50 mev. express your answer in atomic mass units.

The difference in atomic mass between the two isotopes is 1.002780942 atomic mass unit.

Explanation:

For an isotope-I (heavier)  

Mass of an isotope-I=M

Number of neutrons = n+1

Number of protons = p

For an isotope-II

Mass of an isotope-II=M'

Number of neutrons = n

Number of protons = p

Difference in binding energy:

(general binding energy expression)

Binding energy difference between two isotopes:  

..(1)

B.E-B.E'=5.4810 MeV