Energy of an electron in the nth orbit hydrogen atom is given by
`E_n = - (13.6)/(n^2) eV`
How much energy is required to take an electron from the ground state to the first excited state?

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

The energy required to remove an electron from a gaseous atom from its ground state is called

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

Calculate the energy required to excite an electron from first orbit of the hydrogen atom to the third orbit?

The ionization potential for the electron in the ground state of the hydrogen atom is 13.6 eV "atom"^(-1). What would be the inization potential for the electron in the first excited state of Li^(+) ?

An electron in a hydrogen atom in its ground state absorbs 1.5 times as much energy as the minimum required for it to escape from the atom. What is the velocity of the emitted electron?

What is the separation energy (in eV ) for Be^(3+) in the first excited state ?

Bohr's model of hydrogen atom In order to explain the stability of atom and its line spectra, Bohr gave a set of postulates: An electron in an atom revolves in certain circular orbit around the nucleus. These are the orbits for which mvr=(nh)/(2pi) In these allowed orbits, the electron does not radiate energy. When an electron jumps from higher energy level E_(n_2) to lower energy orbit E_(n_1) , radiation is emittd and frequency of emitted electron is given by v=(E_(n_2)-E_(n_1))/h . Further the radius of the n^(th) orbit of hydrogen atom is r=(n^2h^24piepsilon_0)/(4pi^2me^2) and energy of the n^(th) orbit is given by E_n=-13.6/n^2 eV . If 13.6 eV energy is required to ionise the hydrogen atom, then enegy required to remove an electron from n=2 is: