\\\\({}_{26}^{56}Fe \\rightarrow 2{}_{13}^{28}Al\\\\)\\\\(M_1=55.93494\\ u\\\\) is atomic mass of \\\\(Fe\\\\).\\\\(M_2=27.98191\\ u\\\\) is atomic mass of \\\\(Al\\\\).\\\\(Q\\\\) value is \\\\((M_1-2M_2)\ imes931.5 MeV\\\\)\\\\((55.93-2\ imes27.98)\ imes931.5\\\\)\\\\(\\Rightarrow-26.902MeV\\\\)\\\\(Q\\\\) is negative. Hence fission is not possible.