Calculate the radius of the `3^(rd)` orbit of the electron in hydrogen atom

Determine the energies of the first excited states of the electron in hydrogen atom. What are excitation energies of the electron in these orbits?

Determine the energies of the first two excited states of the electron in hydrogen atom. What are the excitation energies of the electrons in these orbits?

In which of the following systems will the radius of the first orbit of the electron be smallest?

In which of the following systems will the radius of the first orbit of the electron be smallest?

The energy associated with the first orbit in the hydrogen atom is -2.18 xx 10^-18 J atom^-2. Calculate the radius of Bohr's fifth orbit for hydrogen atom.

Using the Bohr's model, calculate the speed of the electron in a hydrogen atom in the n=1,2and 3 levels.

Calculate the wavelength of the first line of Paschen series of hydrogen atom.

Calculate the frequency of revolution of the electron in the first Bohr orbit of H-atom, if the radius of the 1st Bohr orbit is 0.50 A^@ and the velocity of electron in the first orbit = 2.24 xx 10^6 m//s .