Define binding energy of a nucleus. Calculate the binding energy of `alpha-`particle in MeV. (Given, mass of proton = 1.008145 amu, mass of neutron = 1.008986 amu, mass of helium nucleus = 4.003875 amu and 1 amu = 931 MeV).

Explanation

`" "E_(b)=[Zm_(p)+(A-Z)m_(n)-m]C^(2)`
For `alpha-`particle
`" "E_(b)=[(2 times 1.008145)+(2 times 1.008986)-4.003875] times 931MeV`
`" "=28.29MeV`