Question

Planck’s constant, h = 6.63 x 10-34 J s, Rydberg constant, R = 1.097 x 107 m-1, the speed of light, c = 3.0 x 108 m/s.
1. The wavelength of a violet light is 400 nm. Calculate the frequency and wavenumber.
2. The frequency of strong yellow line in the spectrum of sodium is 5.09 x 1014s-1. Calculate the wavelength of the light in nanometers.
3. Calculate the magnitude of the energy of the photon associated with light of wavelength 6057.8 Å.
4. Find the wavelength in Å of the line in Balmer series that is associated with drop of the electron from the third energy level.
5. a. Describe Rutherford’s model of the atom.
b. How was it improved by Bohr?
6. If the energy difference between the ground state of an atom and its excited state is 4.4 x 10-19 J, what is the wavelength of the photon required to produce this transition?
7. Give an account of the Bohr’s theory of atomic structure and show how it explains the occurrence of spectral lines in the atomic spectra of hydrogen.
8. a. What are the three quantum numbers used to describe an orbital?
b. What property of an orbital is described by each quantum number?
9. a. Write a note on Heisenberg’s uncertainty principle.
b. How does this principle go against the Bohr’s theory?
10. What do you understand by the dual character of matter

Answer 1

Answer:

uflsfsiogislitdtdifuslurskdkaadkyadukfsuoDKYdkaydaj