Assume that a system has a very large number of energy levels given by the formula εl=ε0l2εl=ε0l2 with ε0=1.25×10−22Jε0=1.25×10−22J, where ll takes on the integer values 1, 2, 3, . . . . Assume further that the degeneracy of a level is given by gl=2lgl=2l.
Calculate the ratio n2/n1 at 250. K.