Name:

22. What is meant by the wave-particle duality of nature?
     

26. Explain how the movement of an electron is similar to that of fan
     blades.
    

27. Explain what it is that the four quantum numbers represent.
    

29. What does the principle quantum number n represent?
     

32. Complete the chart

36. What are the possible values for the fourth quantum number? What
      do these numbers represent?
     

37. State the Pauli Exclusion Principle. What does this principle tell us
      about two electrons occupying the same orbital?
     

40. What elements are composed of atoms having the following electron
      configurations?
     

45. Draw electron (Lewis) dot diagrams for the elements with Z equal
      to 7, 15, 33, 51 and 83
      Sorry folks, this one you have to do on paper.

46. Selenium (Z = 34) was discovered by Berzelius in 1817. Write its
      electron configuration and its dot diagram.
      This also must be done on paper.

49. An atom's electron configuration ends in 5s²4d¹⁰5p⁴. Identify the
     element and write its electron configuration.
     Yep, this one too.

53. Explain why Heisenberg's uncertainty principle has a great effect
     on our ability to observe electrons and other very small particles.
    

55. When an electron moves from the n = 2 to the n = 4 state, does it
      gain or lose energy? Is a photon emitted or absorbed?
     

57. In the electron dot diagram for nitrogen, electrons from which
     orbitals are shown? Which electrons are not shown?
    

62. Draw electron dot diagrams for sodium (Z = 11) and chlorine (Z = 17).
     Can you explain how they might combine to form a compound?
    

Cumulative Review

1. What is the average atomic mass of the element molybdenum if it has
    this isotopic composition?

96.10 u

95.98 u

95.89 u

96.03 u

3. What is the difference between atomic number and atomic mass?
   

4. How much heat energy is required to heat 10.0 grams of tin from 25 ^oC
    to 225 ^oC? Use Appendix Table A-3
    Select One 295 J 305 J 400 J 455 J

8. How many electrons, neutrons and protons are in mendelevium
    (A = 256)
    101 electrons, 155 neutrons, 101 protons

    256 protons, 256 electrons, 155 neutrons

    155 protons, 155 electrons, 101 neutrons

    101 protons, 101 neutrons, 155 electrons

9. Acetone, a common solvent, has a density of 0.788 g/ml. What is the
    the volume of 2.50 x 10² grams of acetone?
    0.956 ml

    317 ml

    1.07 ml

    2.59 ml

12. If you wanted to cook in a metal container that heats rapidly, would
     you choose an iron pan or a copper pan? Explain your answer.
    

    Identify the movie that this clip comes from: click