Question
The binding energies of the atoms of elements X and Y are Ex and Ey respectively. Three atoms of the element Y fuse to give one atom element X. This fusion process is accompained by release of energy U. Then Ex, Ey and U are related as :-
(1)Ex = 3Ey
(2)Ex = 3Ey + U
(3)Ex = 3Ey – U
(4)x + 3Ey + U = 0