Atoms and Nuclei

The minimum kinetic energy needed by an alpha particle to cause the nuclear reaction ‌716N+‌24‌He→‌11H+‌819O in a laboratory frame is n (in MeV. Assume that ‌716N is at rest in the laboratory frame. The masses of ‌716N,‌24‌He,‌11H and ‌819O can be taken to be 16.006u,4.003u,1.008u and 19.003u, respectively, where 1u=930MeVc−2. The value of n is___