Chapter 28, Problem 40P

(a)

To determine

The speed of the electron in a hydrogen atom if it is present in $n=3$ orbit and the radius of the orbit is $4.77\times {10}^{-10}\text{ m}$.

(b)

To determine

The de Broglie wavelength of the electron in a hydrogen atom which is present in the $n=3$ orbit of radius $4.77\times {10}^{-10}\text{ m}$.

(c)

To determine

To check: The circumference of the orbit is equal to three de Broglie wavelengths if the electron is present in $n=3$ orbit and the radius of the orbit is $4.77\times {10}^{-10}\text{ m}$.