Unit #1Unit #2Unit #3Unit #4Unit #5Unit #6Unit #7Unit #8Unit #9Unit #10
spacerUNIT # 4  
spacerspacerIntroduction
spacerspacerObjectives
spacerspacerReading


spacer4.1 The Periods
spacer4.2 The Groups
spacerGroup IA - Alkali metals
spacerGroup IIA - Alkaline earth metals
spacerGroup VIIA - Halogens
spacerGroup VIIIA - Noble gases
spacer4.3 Metals,
spacerNonmetals,
spacerSemimetals

spacerProperties of Metals
spacerProperties of Nommetals
spacerProperties of Semimetals
spacerSummary
spacer4.4 Metallic
spacerBonding

spacer4.5 Octet
spacerRule

spacer4.6 Ions
spacer
4.7 Covalent
spacerBonding

spacerCovalent Bonding & Groups
spacer
4.8 Atomic
spacerSize

spacer
4.9 Ionic
spacerSize

spacerIonic Size of Metal Ions
spacerIonic Size of Nonmetal Ions
spacerIonic Size for Isoelectronic Series
spacer
4.10 mp/bp
spacerTrends
spacer
4.11 Metallic
spacerTrend


spacer** More
spacerspacerperiodic
spacerTrends
**


spacerspacerProblems
spacer1 | 2 | 3
spacerspacerCrossword
spacerspacerHow well do you
spacerknow your
spacerPeriodic Table?

Unit # 4 - The Periodic Table
Bonding

  • (a) What is the difference between an ionic bond and a covalent bond?
  • (b) Which of the following is true about metallic bonding in metals?

    The metal ions are fixed in the metal structure but the valence electrons are free to move around the structure.
    The metals are poor conductors of electricity.
    The metal ions are free to move around the metal structure.

  • (c) Which of the following is true about ionic bonding in ionic compounds.

    Crystalline ionic compounds conduct electricity.
    In water, ions are produced.
    Ionic compounds have very low melting points.

  • (d) Which of the following is true about covalent bonding in molecules.

    Compounds involving covalent bonding conduct electricity.
    In water, they form ions.
    Compounds involving covalent bonding have low melting points.

  • (e) Which of the following compounds have ionic bonding, KCl, CO2, or NH3

    KCl CO2 NH3

  • (f) Which of the following compounds have covalent bonding, MgBr2, Br2, or NaBr

    MgBr2 Br2 NaBr

  • (g) Why is it not correct to refer to sodium chloride as a "molecule"?

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