Atomic Structure

If the de-Broglie wavelength of a particle is equal to $10 \sqrt{h / m}$, then what is the ratio of its speed to mass?

The degeneracy of a hydrogen atom whose energy equals $-R_{\mathrm{H}}$ / 16

If the de-broglie wavelength of a particle of mass $ (m) $ is 100 times its velocity. Then, its value in terms of its mass $ (m) $ and plank constant $ (h) $ is

The degeneracy of hydrogen atom that has energy equal to $ \frac{-R_{\mathrm{H}}}{9} $ is (where, $ R_{\mathrm{H}}= $ Rydberg constant)

Which of the following statements does not form a part of Bohr's model of hydrogen atom?

Which one of the following statements in relation to the hydrogen atom is correct?

Rutherford model could not explain

Ionisation energy for H+ ion is proportional to rn, then value of n is

If Rydberg constant is same for all elements, the angular momentum and energy of Li2+ of which orbital is equal to angular momentum and energy of 1 s-orbital of hydrogen atom?

What is the magnetic moment of Ti2+ ? (Given : Atomic number = 22)

If the quantum number I could have the value 'n' also then, Sc(21) would have electronic configuration as (other rules strictly followed)

Ionisation energy of H-atom is 13.6 eV. The wavelengths of the spectral line emitted when an electron in Be3+ comes them 5th energy level to 2nd energy level is