What is the value of first excitation energy of hydrogen atom ?

Define lonisation energy. What is the lonization energy of hydrogen atom ?

A vessel contains one mole of oxygen and one mole of hydrogen at N.T.P. What is the ratio of the values of rms velocities of hydrogen and oxygen molecules?

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 -3.4eV . 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 . Which of the answers above would change if the choice of the zero of potential energy is changed?

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

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

The radius of innermost electron orbit of a hydrogen atom is 5.3xx10^(-11)m . What is the radius of orbit in the second excited state?

Calculate the wavelength of the first three lines in Paschen series of hydrogen atom.