The ratio of areas within the elctron orbits for the first excited state to the ground sate for hydrogen atom is

The ratio of areas within the electron orbits for the first excited state to the ground state for hydrogen atom is

The ratio of areas of the electron orbits for the first excited state and the ground state for the hydrogen atom is .....

The ratio of the areas of the orbit for the second excited state to the first excited state for the hydrogen atom is

What is the ratio of radii of the orbits corresponding to first excited state and ground state in a hydrogen atom ?

What is the ratio of radii of the orbits corresponding to first excited state and ground state in a hydrogen atom?

What is the ratio of radii of the orbits corresponding to first excited state and ground state in a hydrogen atom?

The energy needed to detach the electron of a hydrogen like ion in ground state is a system(a) what is the wavelength of the radiation emitted when the electron jumps from the first excited state to the ground state? (b) What is the radius of the orbit for this atom?