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CHAPTER 5 REVIEW

The Periodic Law

MIXED REVIEW

SHORT ANSWER

Answer the following questions in the space provided.

  • 1.

    Consider a neutral atom with 53 protons and 74 neutrons to answer the following questions.

    • a.

      What is its atomic number?

    • b.

      What is its mass in amus?

    • c.

      Is the element’s position in a modern periodic table determined by its atomic number or by its atomic mass?

  • 2.

    Consider an element whose outermost electron configuration is 3d104s24px.

a. To which period does the element belong?

b.

If it is a halogen, what is the value of x?

c.

The group number will equal (10 2 x). True or False?

a.

Metalloids are found in which block, s, p, d, or f ?

b.

The hardest, densest metals are found in which block, s, p, d, or f ?

a.

Name the most chemically active halogen.

3.

4.

    • b.

      Write its electron configuration.

    • c.

      Write the configuration of the most-stable ion this element makes.

  • 5.

    Referring only to the periodic table at the top of the Section 5-2 Review on page 35, answer the

following questions on periodic trends.

  • a.

    Which has the larger radius, Al or In?

  • b.

    Which has the larger radius, Se or Ca?

  • c.

    Which has a larger radius, Ca or Ca2?

d. Which has greater ionization energies as a class, metals or nonmetals?

  • e.

    Which has the greater ionization energy, As or Cl?

  • f.

    An element with a large negative electron affinity is most likely

to form a positive ion, a negative ion, or a neutral atom?

MODERN CHEMISTRY

CHAPTER 5 MIXED REVIEW

39

HRW material copyrighted under notice appearing earlier in this work.

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