Atoms and Nucle...

An electron has a mass of 9.1 × 10^–31 kg. It revolvesaround the nucleus in a circular orbit of radius 0.529 × 10^–10 metre at a speed of 2.2 × 10⁶ m/s. The magnitude of its linear momentum in this motion is

In a beryllium atom, if a₀ be the radius of the first orbit, then the radius of the second orbit will be in general

In a Rutherford scattering experiment when a projectile of charge z₁ and mass M₁ approaches a target nucleus of charge z₂ and mass M₂, the distance of closest approach is r₀. The energy of the projectile is

Ionization potential of hydrogen atom is 13.6 V. Hydrogen atoms in the ground state are excited by monochromatic radiation of photon energy 12.1 eV. The spectral lines emitted by hydrogen atoms according to Bohr\'s theory will be

Energy levels A, B, C of a certain atom corresponding to increasing values of energy. i.e., E_AB< E_C. If λ₁, λ₂, λ₃ are the wavelengths of radiations corresponding to the transitions C to B, B to A and C to A respectively, which of the following statements is correct

The angular momentum of electron in n^th orbit is given by

The ratio of the energies of the hydrogen atom in its first to second excited state is

The ionization energy of the electron in the hydrogen atom in its ground state is 13.6 eV. The atoms are excited to higher energy levels to emit radiations of 6 wavelengths. Maximum wavelength of emitted radiation corresponds to the transition between

The ionization energy of 10 times ionized sodium atom is

If the wavelength of the first line of the Balmer series of hydrogen is 6561 Å, the wavelength of the second lineof the series should be