Estimate the ratio of the wavelength associated with the electron orbiting around the nucleus in the ground and first excited state of hydrogen atom.

Calculate the de Broglies wavelength associated with the electron revolving in the first excited state of hydrogen atom. The ground state energy of the hydrogen atom is -13.6 eV.

Explain the meaning of ground state and excited state of an atom?

Identify the kind of motion in the following cases: An electron orbiting around a nucleus.

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

Deduce the expression for the magnetic dipole moment of an electron orbitting around the central nucleus.

Determine the speed of the electron in the n=3 orbit of hydrogen atom.

What is the angular momentum of an electron in ground state in hydrogen atom?

The energy of an electron in nth orbit of hydrogen atom is