Chem 6a Slide set 14

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Chem 6a Slide set 14

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  • Chem 6ASlide Set #14

    2013-10-301

    Overview

    CHAPTER 6

    Ionic Bonding

    Ionic Compounds

    Electron Configuration of Ions

  • 2Ions With Noble Gas Configuration

    Know the charges of these ions.

  • 3Ions With Noble Gas Configuration

    Know the charges of these ions.

  • 4Ions of transition elements

    Electrons with the highest n value are removed first.

    E.g.:V: [Ar] 4s2 3d3 V2+: [Ar] 3d3

    So the electrons that were first-in (4s2) are first-out when the ion is formed.

  • 5Electron pairing and magnetic properties

    Paramagnetic: unpaired electron(s); attracted by a magnetic field

    Diamagnetic: all electrons paired; very slightly repelled by magnetic field

    Paramagnetic MnSO4H2O is drawn between the poles of a magnet

  • 618-Electron Rule (Pseudo-Noble Gas Configuration)

    Know the charges of these ions.

    51Sb5+83Bi5+

  • 7The Inert Pair Effect

    Metals in Groups 13, 14, & 15 may show the inert-pair effect:

    outer s electrons are especially stable, not necessarily lost when a cation forms.

    Pseudo-noble-gas configuration

  • 8Inert Pair Ions

    Know the charges of these ions.

  • 9Metals With 1, 2, or 3 Common Ion Charges

    Know these common ions and their charges.

  • 10

    Problem

    What is the formula of gallium selenide?

    A) GaSe

    B) Ga2Se

    C) GaSe3

    D) Ga3Se

    E) Ga2Se3

    F) Ga3Se2

    G) Ga3Se4

  • 11

    Problem

    What is the formula of vanadium(V) oxide?

    A) VO5

    B) V2O3

    C) V2O5

    D) V3O2

    E) V5O

    F) V5O2

    G) V5O3

  • 12

    HOMEWORK

    Read: Chapter 6, Sections 6-6 and 6-7

    Textbook problems from the end of Chapter 6:6-2, 6-4, 6-6, 6-10, 6-14, 6-16, 6-24, 6-26, 6-30