A 12.5 eV electron beam is used to bombard gaseous hydrogen at room temperature. What series of wavelengths will be emitted?

Using bohr's second postaulate of quantisation of orbital angular momentum,show that the circumfernece of the electron in the nth orbital srtate in hydrogen atom is n times the de-Broglie wavelength associated with it.

The second member of Lyman series in hydrogen spectrum has wavelength of 5400overset@A .What is the wavelength of first member in the same series ?

The total energy of an electron in the first excited state of the hydrogen atom is about-3.4ev What is the kinetic energy of the electron in this state?

The total energy of an electron in the first excited state of the hydrogen atom is about-3.4ev What is the potential energy of the electron in this state?

The total energy of an electron in the first excited state of the hydrogen atom is about -3.4 eV. (A) What is the kinetic energy of the electron in this state? (B) What is the potential energy of the electron in this state? (C) Which of the answers above would change if the choice of the zero of potential energy is changed?

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.