Atomic Structure-Question List

Short Questions (1 or 2 marks)

  1. What is absorption spectrum?
  2. What is emission spectrum?
  3. The circular paths in which electrons revolve are called _____
  4. Why are light rays called as electromagnetic waves?
  5. Write Planck’s equation. What is its significance?
  6. What do you observe on heating an iron rod?
  7. Red colour has ____ wavelength compared to blue colour.
  8. What is a continuous spectrum? Give example.
  9. What is a line spectrum?
  10. Why do street lamps give yellow colour light?
  11. Speed of light in vacuum is ____
  12. K shell has ____ subshell
  13. If n = 2, write l = ? and m = ?
  14. Write the four quantum numbers for the electron in H-atom.
  15. Write the 4 quantum numbers for the electron entering the last orbital of Na atom.
  16. ___ is the maximum number of electrons that can be accommodated in d-orbital.
  17. While writing electronic configuration for F, a student wrote 1s2 2s1 2p6. Is this correct?
  18. While writing electronic configuration of Sc, a student wrote 1s2 2s2 2p6 3s2 3p6 3d3. Is this correct?
  19. An electron has the following four quantum numbers. n=2, l=0, m=0, s=1/2. To which orbital does the electron belong?
  20. What is the importance of nlx method of writing electronic configuration?
  21. Draw p-orbitals.
  22. Draw dx2-y2, dz2, dxy orbitals.
  23. What are degenerate orbitals?
  24. Do 2p and 3p orbitals have the same energy?
  25. Write electronic configuration for a) S  b) Mg  c) Fe  d) N
  26. What is Heisenberg’s uncertainty principle?
  27. Define an orbital.
  28. How did Sommerfeld modify Bohr’s atomic model.
  29. Wavelength of violet light is 400 nm. What is its energy?
  30. A student made a paste of the following salts in mineral acids and introduced to flame. Guess the colour of the flame observed for each of the salts given below
    • KCl
    • CuSO4
    • CaSO4
    • SrCl2

4 marks Questions 

  1. Write the rules to be followed while writing electronic configuration.
  2. What is the importance of writing electronic configuration?
  3. Explain briefly on the four quantum numbers.
  4. Explain on Bohr’s model of Hydrogen atom?
  5. Discuss the various regions of electromagnetic spectrum.

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