Atoms Test - 79...

The ratio of the largest to shortest wavelength in Lyman series of hydrogen spectra is

The wavelength of the least energetic photon in the Balmer spectrum of hydrogen atom is:

The hydrogen atom in ground state is excited by a monochromatic radiation of $$  \lambda=975 A^{\circ}  $$ . Number of spectral lines in the resulting spectrum emitted will be

An excited electron of H-atoms emits a photon of wavelength λ and returns in the ground state, the principal quantum number of excited state is given by:

The radius of which of the following orbit is same as that of the first Bohr's orbit of hydrogen atom 

The relation between $${\lambda}_{1}$$: wavelength of series limit of Lyman series, $${\lambda}_{0}$$: the wavelength of the series limit of Balmer series and $${\lambda}_{3}$$: the wavelength of first line of Lyman series is:

In hydrogen atom electron is revolving around nucleus in circular orbit with frequency of $$6.57 \times {1^{15}}$$ revolutions. If its equivalent magnetic moment is $$9.24 \times {10^{ - 24}}A{m^2}$$ , the radius of orbit of electron is 

According to the Bohr theory of the hydrogen atom electrons starting in the $$4^{th}$$ energy level and eventually ending in the ground state could produce a total of how many lines in the hydrogen spectra ?

Heat treatment of muscular pain involves radiation of wavelength of about 900 nm. Which spectral line H-atom is suitable for this purpose ?

The frequency of first line of Balmer series in hydrogen atom is $$v_0$$. The frequency of corresponding line emitted by singly ionised helium atom is -