9.4 Exercise 7

What is the difference in energy between the $n_{x} = n_{y} = n_{z} = 4$ state and the state with the next higher energy? What is the percentage change in the energy between the $n_{x} = n_{y} = n_{z} = 4$ state and the state with the next higher energy? (b) Compare these with the difference in energy and the percentage change in the energy between the $n_{x} = n_{y} = n_{z} = 400$ state and the state with the next higher energy.