Let Eadj be the energy difference between two adjacent en (a) Show that the ratio ?Eadj/E approaches

Let Eadj be the energy difference between two adjacent en

(a) Show that the ratio ∆Eadj/E approaches the value 2/n at large values of the quantum number n. As n → ∞, does (b) ∆Eadj (c) E, or (d) ∆Eadj/E approach zero? (e) What do these results mean in terms of the correspondence principle?

Let Eadj be the energy difference between two adjacent en