Atomic and Nuclear Physics Answers

hi!i wanted to prove that the surface energy and coulomb energy of nuclear of its deformation during nuclear fission are:
E[s]=a[s] A^(2/3){1+2/5 E^2 +...}
E[c]=a[c]A^(-1/3){1-1/5 E^2+.....}

If Higgs boson almost immediately decays into some other particles and finally into some more stable particles how on earth it can influence anything if it basically does not exist in the real world?
How can the Higgs boson, with mass of 125 GeV can decay into two massless photons? They already travel with the speed of light so cannot be any more energetic E=mc2

Electron of kinetic energy 500 MeV are scattered from a target of nuclei into a diffraction pattern that has minima with an average separation of theta=30 degree.Find the charge distribution radius,r of the target nuclei.