One description of the potential energy of a diatomic molecule is given by the Lennard-Jones potential, U = A 12 B 6' where A and B are constants and r is the separation distance between the atoms. For the H2 molecule, take A = 0.125 x 10-120 eV m12 and B = 1.490 x 10-60 ev. mб. . (a) Find the separation distance ro at which the energy of the molecule is a minimum. (Give you answer to at least two decimal places.) pm (b) Find the energy E required to break up the H2 molecule. eV