Atoms and Nucle...

The ratio of the energies of the hydrogen atom in its first to second excited state is

An electron jumps from the 4^th orbit to the 2^nd orbit of hydrogen atom. Given the Rydberg\'s constant R = 10⁵ cm^-1. The frequency in Hz of the emitted radiation will be

According to Bohr\'s theory the radius of electron in an orbit described by principal quantum number n and atomic number Z is proportional to

The radius of electron\'s second stationary orbit in Bohr\'s atom is R. The radius of the third orbit will be

In any Bohr orbit of the hydrogen atom, the ratio of kinetic energy to potential energy of the electron is

Figure shows the energy levels P, Q, R, S and G of an atom where G is the ground state. A red line in the emission spectrum of the atom can be obtained by an energy level change from Q to S. A blue line can be obtained by following energy level change

The figure indicates the energy level diagram of an atom and the origin of six spectral lines in emission (e.g., line no. 5 arises from the transition from level B to A). Which of the following spectral lines will also occur in the absorption spectra?

When a hydrogen atom is raised from the ground state to an excited state

An electron makes a transition from orbit n = 4 to the orbit n = 2 of a hydrogen atom. The wave number of the emitted radiations (R = Rydberg\'s constant) will be

In Bohr model of the hydrogen atom, the lowest orbit corresponds to