Q64. an electric field e = e,ž is applied to a hydrogen atom in n = 2 excited state. ignoring spin the n =2 state is fourfold degenerate, which in the ,m) basis

Q64. An electric field E = E,ž is applied to a Hydrogen atom in n = 2 excited state. Ignoring spin the n =2 state is fourfold degenerate, which in the ,m) basis are given by 0,0.1,1)|1,0) and |1,-1). If H is the interaction Hamiltonian corresponding to the applied electric field, which of the following matrix elements is nonzero? (a) (0,0 "|0,0) (b)0,0 "'|1, ()(0,0 r"|1.0 (d) (0,0 F"|L-1)