Unit 8 Quiz--Periodic Trends

Multiple Choice (Choose the best answer.)

  1. Which of the following is NOT a trend that varies systematically in the periodic table?

    electronegativity

    symbols of elements

    ionization energy

    atomic radius

    ionic radius


  2. The atomic radius of F, Br, and I are 64, 114, and 138 pm respectively. From this information (and not your book) estimate a reasonable atomic radius of Cl.

    53 pm

    89 pm

    126 pm

    162 pm

    196 pm


  3. Use the periodic table (not any tables in your book) to predict which element has the largest ionization energy.

    H

    He

    Fr

    Rn

    Rh


  4. Use the periodic table (not any tables or charts in your book) to predict which element has the largest atomic radius.

    H

    He

    Fr

    Rn

    Rh


  5. Use your knowledge of periodic trends to predict which element reacts most vigourosly with water to produce hydrogen gas.

    H

    He

    Fr

    Rn

    Rh


  6. Which of the following is a transition element?

    H

    He

    Fr

    Rn

    Rh


  7. The element germanium is used in the manufacture of some transistors. What other element might be used for such a purpose?

    Ga

    Se

    Si

    Pb

    Tl


  8. For which of the properties does Li have a larger value than potassium? Use the periodic table (not the tables or charts in your text.)

    first ionization energy

    atomic radius

    ionic radius

    number of protons

    molecular weight


  9. The energy needed to remove the first electron from an atom is the first ionization energy. The energy needed to remove the second electron from an atom is the second ionization energy. The definition of third and fourth ionization energies is similar. Which of the atoms below would you expect to have the largest 3rd ionization energy?

    Na

    Mg

    Al

    Si

    P


  10. Electronegativity tends to increase as you

    go down a column of the periodic table.

    go from left to right across the periodic table..

    go toward the middle of the periodic table.

    go from the upper left-hand corner to the lower right-hand corner of the periodic table..

    None of these are correct.


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