Chapter 36, Problem 66P

To determine

To show: The $\text{Schr}\ddot{\text{o}}\text{dinger}$ equation is satisfied by ${\psi }_{\text{2s}}$ state of hydrogen atom and the energy is given by $E_2=-\frac{1}{2^2}\frac{{\hslash }^2}{2m{a}_0^2}$.