[UPSC CSE 2018] Nuclear Physics (Q74, 10M)

The maximum energy of a positron (e^+) released in the decay of \,_{6}^{13}\mathrm{C} atom into a \,_{7}^{13}\mathrm{N} atom is 1.202\,\mathrm{MeV}. If the mass of the \,_{6}^{13}\mathrm{C} atom is 13.003354\,\mathrm{u}, calculate the mass of the \,_{7}^{13}\mathrm{N} atom.