Atomic Spectra

In hydrogen spectrum, the shortest wavelength in the Balmer series is$\lambda$. The shortest wavelength in the Brackett series 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 $h=6.625\times {10}^{-34}\mathrm{Js}$)
 

The ratio between shortest wavelength in Balmer series to shortest wavelength in Brackett series is

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?

What is the shortest wavelength present in the Balmer series of spectral line? [Where $R$ is Rydberg constant]

The minimum wavelength for Balmer series is _____

When the first transitions of the Balmer series of excited hydrogen atoms are observed at an angle $\theta =60°$ to their motion, the wavelength appears to be displaced by $\Delta \lambda =0.2Å$. If the velocity of the hydrogen atoms is found to be $\mathrm{N}\times {10}^3 \mathrm{m}{ \mathrm{s}}^{-1}$, then find the value of $\left[\mathrm{N}\right]$, where $\left[\right]$ is greatest integer function. [Take $R={10}^7{ \mathrm{m}}^{-1}$ ]

Why would any energy be released if electrons are exchanged with Same energy levels?

In physics find balmer series.

In hydrogen like atom $\left(Z=11\right)$, $n^{\mathrm{th}}$ line of Lyman series has wavelength $\lambda$ equal to the de-Broglie's wavelength of electron in the level from which it originated. The value of $n$ is

In the hydrogen atom spectrum ${\lambda }_{3-1}$ and ${\lambda }_{2-1}$ represent wavelengths emitted due to transition from second and first excited states to the ground state respectively. The value of $\frac{{\lambda }_{3-1}}{{\lambda }_{2-1}}$ is 

Franck-Hertz experiment is performed using an accelerating potential of $8.0 \mathrm{V}$ in a tube containing mercury vapour. The energy levels of mercury are shown in the figure. Assume the mercury atoms to be initially in their ground states.

________________ $10.4\mathrm{eV}$

________________  $8.8\mathrm{eV}$

________________  $6.7\mathrm{eV}$

________________  $4.9\mathrm{eV}$

________________  $0$

After passing through the gas, electrons can have energies

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-

The ratio of wavelengths of the last line of Balmer series and the last line of Lyman series is