Atomic Physics

The energy levels of an atom is shown is figure. Which one of these transitions will result in the emission of a photon of wavelength $124.1\mathrm{nm}$? Given ($h=6.62\times\,10^{-34}Js$)

$\sqrt{d_{1}}$ and $\sqrt{d_{2}}$ are the impact parameters corresponding to scattering angles $60^{\circ}$ and $90^{\circ}$ respectively, when an $\alpha\,$ particle is approaching a gold nucleus. For $d_{1}=xd_{2}$,…

Radius of a certain orbit of hydrogen atom is $8.48 Ã\ldots$. If energy of electron in this orbit is $E / x$. then $x=$ _____ (Given $\mathrm{a}_0=0.529 Ã\ldots, E=$ energy of electron in ground state).

Using Bohr's model, calculate the ratio of the magnetic fields generated due to the motion of the electrons in the $2^{\text{nd}}$ and $4^{\text{th}}$ orbits of hydrogen atom _______.

Which of the following figure represents the variation of $\ln\,\left(\frac{R}{R_{0}}\right)$ with $\ln\,A$ (if $R=$radius of a nucleus and $A=$ its mass number)

Arrange the following in the ascending order of wavelength $(\lambda)$ : (A) Microwaves $\left(\lambda_1\right)$ (B) Ultraviolet rays $\left(\lambda_2\right)$ (C) Infrared rays $\left(\lambda_3\right)$ (D) X-rays…

The ratio of the shortest wavelength of Balmer series to the shortest wavelength of Lyman series for hydrogen atom is :

The recoil speed of a hydrogen atom after it emits a photon in going from$n=5$ state to$n=5$ state will be

If an alpha particle with energy 7.7 MeV is bombarded on a thin gold foil, the closest distance from nucleus it can reach is $\_\_\_\_$ m. (Atomic number of gold $=79$ and $\frac{1}{4 \pi \epsilon_{\mathrm{o}}}=9 \times…

A free electron of$2.6eV$energy collides with a$H^{+}$ ion. This results in the formation of a hydrogen atom in the first excited state and a photon is released. Find the frequency of the emitted…

Imagine that the electron in a hydrogen atom is replaced by a muon$(\mu).$ The mass of muon particle is$207$times that of an electron and charge is equal to the charge of an electron. The ionization potential of this…

Which level of the single ionized carbon has the same energy as the ground state energy of hydrogen atom?