List of top Physics Questions on Atoms asked in JEE Main

If Rydberg’s constant is $ R $, the longest wavelength of radiation in Paschen series will be $ \frac{\alpha}{7R} $, where $ \alpha = \_\_\_\_\_\_\_ $.

The radius of the third stationary orbit of an electron in Bohr's atom is $ R $. The radius of the fourth stationary orbit will be:

The energy levels of an hydrogen atom are shown below. The transition corresponding to emission of shortest wavelength is

Hydrogen atom from excited state comes to the ground by emitting a photon of wavelength $\lambda$ The value of principal quantum number 'n' of the excited state will be :(R : Rydberg constant)

If the two metals $A$ and $B$ are exposed to radiation of wavelength $350 mm$. The work functions of metals $A$ and $B$ are $4.8 eV$ and $2.2 eV$. Then choose the correct option

The potential energy of an electron is defined as U = $\frac 12$ mw²x² and follows Bohr’s law. Radius of orbit as function of n depends on? (w is same constant)

Find the radius of the orbit corresponding to the 4th excited state in Li++. (a0 is the radius of first orbit in H-atom)

The energy levels of an atom is shown in figure:

Which one of these transitions will result in the emission of a photon of wavelength $1241\, nm$ ? Given $\left( h =6.62 \times 10^{-34} Js \right)$

Find out 5^th orbit radius (in pm) of Li⁺⁺ if ground orbit radius of H-atom is 51 pm.

The radius of fifth orbit of the Li++ is __________ × 10^-12 m.
Take : radius of hydrogen atom = 0.51 Å

Ratio of wavelengths of photons corresponding to first and second line of Balmer series in an emission spectrum is given by $\frac{x}{20}$ for a hydrogen like species. Value of x is equal to

Choose the correct option from the following options given below :

Given below two statements: One is labelled as Assertion (A) and other is labelled as Reason (R).
Assertion (A) : Non-polar materials do not have any permanent dipole moment.
Reason (R) :When a non-polar material is placed in an electric field, the centre of the positive charge distribution of it’s individual atom or molecule coincides with the centre of the negative charge distribution.
In the light of above statements, choose the most appropriate answer from the options given below.