Atoms questions
233 published questions with worked solutions.
- The ratio of wavelength of spectral lines H_ and H_ in the Balmer series is x 20 . The value of x is _____
- The angular momentum for the electron in Bohr's orbit is L. If the electron is assumed to revolve in second orbit of hydrogen...
- A monochromatic light is incident on a hydrogen sample in ground state. Hydrogen atoms absorb a fraction of light and...
- A 12.5 eV electron beam is used to bombard gaseous hydrogen at room temperature. The number of spectral lines emitted will be:
- A photon is emitted in transition from n = 4 to n = 1 level in hydrogen atom. The corresponding wavelength for this transition is...
- The wavelength of the radiation emitted is _0 when an electron jumps from the second excited state to the first excited state of...
- If the binding energy of ground state electron in a hydrogen atom is 13.6 eV, then, the energy required to remove the electron...
- The largest wavelength in the ultraviolet region of the hydrogen spectrum is 122 nm. The smallest wavelength in the infrared...
- STATEMENT-1 : If the accelerating potential in an X-ray tube is increased, the wavelengths of the characteristic X-rays do not...
- Electrons with de-Broglie wavelength λ fall on the target in an X-ray tube. The cut-off wavelength of the emitted X-rays is
- List-I shows various functional dependencies of energy (E) on the atomic number (Z). Energies associated with certain phenomena...
- The wavelengths involved in the spectrum of deuterium ( _1^2D ) are slightly different from that of hydrogen spectrum, because
- An -particle of energy 5MeV is scattered through 180^ by a fixed uranium nucleus. The distance of the closest approach is of the...
- An alpha nucleus of energy 12mv^2 bombards a heavy nuclear target of charge Ze. Then the distance of closest approach for the...
- Suppose an electron is attracted towards the origin by a force k/r where ' k ' is a constant and ' r ' is the distance of the...
- In hydrogen atom, the electron is moving round the nucleus with velocity 2.18 10^6 m ,s^ -1 in an orbit of radius 0.528 Å . The...
- The ratio of magnetic dipole moment of an electron of charge 'e' and mass 'm' in Bohr's orbit in hydrogen atom to its angular...
- The elementary magnetic moment of revolving electron is also known as
- The numeric value of Bohr magneton is
- Alpha–particles that come closer to nuclei
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