Chapter 7 Ionic and Metallic Bonding 7.1 Ions 7.2 Ionic Bonds and

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Presentation transcript:

Chapter 7 Ionic and Metallic Bonding 7.1 Ions 7.2 Ionic Bonds and Ionic Compounds 7.3 Bonding in Metals Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

These are the electrons involved in bonding. Valence Electrons Valence electrons - Electrons in the highest occupied energy level of an element’s atoms. These are the electrons involved in bonding. Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

valence electrons = group number (except He) Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

Electron Dot Structures: Interpret Data Electron Dot Structures: - Show valence electrons as dots around element symbol. - Also called Lewis structures. Electron Dot Structures of Some Group A Elements Period Group 1A 2A 3A 4A 5A 6A 7A 8A 1 2 3 4 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

Determining the Number of Valence Electrons for the following atoms Cs F O Xe Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

Valence Electrons The Octet Rule When forming compounds, atoms tend to achieve the electron configuration of a noble gas. Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

Transition: charge can vary Formation of Cations Cations Group 1A: + charge. Group 2A: 2+ charge. Transition: charge can vary Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

Formed by nonmetals and metalloids Name ends in –ide Cl- is chloride Formation of Anions Anions Formed by nonmetals and metalloids Name ends in –ide Cl- is chloride O2– is oxide Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

How many electrons will each element gain or lose in forming an ion? a) Magnesium b) Fluorine c) Aluminum d) Oxygen Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

END OF 7.1 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.