Atomic Physics Questions

Energy levels A, B and C of a certain atom correspond to increasing values of energy i.e., EA < EB < EC. If λ1, λ2 and λ3 are wavelengths of radiations corresponding to transitions C to B, B to A and C to A respectively, which of the following relations is correct ?

The total energy of an electron in the first excited state of hyrogen is about - 3.4 eV. Its kinetic energy in this state is :

The wavelength of the first line of Lyman series for hydrogen atom is equal to that of the second line of Balmer series for a hydrogen-like ion. The atomic number $Z$ of the hydrogen-like ion is:

The total energy of an electron in the first excited state of hydrogen is about - 3.4 eV. Its kinetic energy in this state is :

In the phenomenon of electric discharge through gases at low pressure, the coloured glow in the tube appears as a result of:

The ground state energy of hydrogen atom is $-13.6\text{eV}$. When its electron is in the first excited state, its excitation energy is: