n = do n = 5 n= 4 0.545 ey 0.849 ev n= -1.51 ev n = 2 -3.41 ev s? n = 1 -13.60 ev12.28 Refer to the diagram for question 12.22. Plot a graph of the values of energy E on the y-axis against the square of the number of the level (i.e. n2) on the x-axis. Choose scales so that values of n2 up to 60 can be plotted on the x-axis, and use a scale of 1 cm per eV on the y-axis. From your graph deduce the next two highest energy levels above those shown in the previous diagram