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MIXED REVIEW continued

g. In general, which has a stronger electron attraction, large atoms or small atoms?

  • h.

    Which has greater electronegativity, O or Se?

  • i.

    In the covalent bond between Se and O, to which atom is the

electron pair more closely drawn?

j. How many valence electrons are there in a neutral atom of Se?

6.

Identify all of the ions below that do not have noble gas stability.

K

S2

Ca

I

Al3

Zn2

7. Using only the periodic table in Section 5-2 Review on page 35, give the noble-gas notation of the following:

a. Br

    • b.

      Br

    • c.

      the element in Group 13, Period 5

    • d.

      the lanthanide metal with the smallest atomic number

  • 8.

    Use position in the periodic table and electron configurations to describe the chemical properties of

calcium and oxygen.

9. Copper’s electron configuration might be predicted to be 3d94s2. But in fact, its configuration is 3d104s1. The two elements below copper in Group 11 behave similarly. (Confirm this in the periodic table in Figure 5-6 on pages 130–131 of the text.)

  • a.

    Which configuration is apparently more stable?

  • b.

    Is the d subshell completed in the atoms of these three elements?

  • c.

    Every element in Period 4 has four levels of electrons established.

True or False?

40

CHAPTER 5 MIXED REVIEW

MODERN CHEMISTRY

HRW material copyrighted under notice appearing earlier in this work.

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