Find binding energy

State and explain binding energy of a nucleus.

A heavy nucleus P of mass number of 240 and binding energy 7.6 MeV per nucleon splits into two nuclie Q and R of mass numbers 110 and 130 and binding energy per nucleon 8.5 MeV and 8.4 MeV, respectively. Calculate the energy released in the fission.

Can visible light be able to emit an electron bound in a metal having binding energy of 4eV?

Calculate mass defect, binding energy and binding energy per nucleon of deuteron ( "_1H^2 ) nucleus. Given mass of proton=1.007275 a.m.u., mass of neutron = 1.008665 a.m.u. and mass of deuteron =2.013553 a.m.u.

The mass of _3Li^7 nucleus is 0.042 a.m.u. less than the sum of masses of its nucleons.Find th binding energy per nucleon.