Hydrogen Spectrum

The ratio of wavelength of spectral lines ${\mathrm{H}}_{\alpha }$ and ${\mathrm{H}}_{\beta }$ in the Balmer series is $\frac{x}{20}$. The value of $x$ is _____.

A monochromatic light is incident on a hydrogen sample in ground state. Hydrogen atoms absorb a fraction of light and subsequently emit radiation of six different wavelengths. The frequency of incident light is $x\times {10}^{15} \mathrm{Hz}$. The value of x is ________
(Given $h=4.25\times {10}^{-15} \mathrm{eVs}$)

If $917 \mathrm{\AA }$  be the lowest wavelength of Lyman series then the lowest wavelength of Balmer series will be $\mathrm{\AA }$.

In a sample of hydrogen like atoms all of which are in ground state, a photon beam containing photons of various energies is passed. In absorption spectrum, five dark lines are observed. The number of bright lines in the emission spectrum will be (Assume that all transitions take place)
 

What is the relation between line of spectrum and quantum number.

The frequency of radiation emitted when the electron falls from $n=4$ to $n=1$ in a hydrogen atom will be (Given ionization energy of $H=2.18\times {10}^{18} \mathrm{J} {\mathrm{atom}}^{-1}$ and $h=6.625\times {10}^{-34}\mathrm{Js}$)
 

What are the frequency and wavelength in $\left(\mathrm{nm}\right)$ of a photon emitted during a transition from $n=5$ to $n=2$ in the Hydrogen atom.

A light of $434\mathrm{mm}$ is emailed by an electron when it's make's a tradition form $m^{\text{th }}$ orbit to second orbit. Calculate the Value of $m$.

On what factors do the Rydberg constant depend upon?

Consider the three atoms who are in $H-$like state, $H, H{e}^{+}, L{i}^{++}$are in their ground states.
Suppose $E_1, E_2$ and $E_3$ are minimum energies required so that the atoms $H, H{e}^{+}, L{i}^{++}$can achieve their first excited states respectively, then-

Briefly explain Humphrey series.

Name spectral series of hydrogen which lies in the infrared region of electromagnetic spectrum.

$X$ different wavelength may be observed in the spectrum from a hydrogen sample if the atoms are excited to states with principal quantum number $n=6$? The value of $X$ is

Which of the following is the property of Rydberg constant?

If the series limit frequency of the Lyman series is $v_L$, then what is the series limit frequency of the Pfund series?

Who did experimental discovery of the Pfund series?

What is order of pfund series in atomic sptectra?

In which part of the electromagnetic spectrum Paschen series of hydrogen is found:

Consider a hydrogen-like sample of gas whose energy in the $n^{th}$ excited state is given by $E_n=\frac{-13.6Z^2}{n^2} \mathrm{eV}$. When the electron makes transitions from an excited state to the ground state, the most energetic photons can have energy $E_{max}=52.224 \mathrm{eV}$ and the least energetic photons can have energy $E_{min}=1.224 \mathrm{eV}$. If the atomic number of the atom and the state of excitation are $Z$ and $n$ respectively, then what is the value of $Z+n$?

The value of Rydberg's constant is