• Describe a covalent bond as a shared pair of electrons.

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Presentation transcript:

• Describe a covalent bond as a shared pair of electrons. Week 7 • Describe a covalent bond as a shared pair of electrons. • Describe single and multiple covalent bonding. • Use dot-and-cross diagrams to represent covalent bonding. © Pearson Education Ltd 2008 This document may have been altered from the original

Attraction in a covalent bond Week 7 Attraction in a covalent bond © Pearson Education Ltd 2008 This document may have been altered from the original

Covalent bond formation in H2 Week 7 Covalent bond formation in H2 © Pearson Education Ltd 2008 This document may have been altered from the original

Week 7 Covalent bonding in Cl2 © Pearson Education Ltd 2008 This document may have been altered from the original

Covalent bonding in H2O, NH3 and CH4 Week 7 Covalent bonding in H2O, NH3 and CH4 © Pearson Education Ltd 2008 This document may have been altered from the original

Dot-and-cross diagrams of O2, N2 and CO2 Week 7 Dot-and-cross diagrams of O2, N2 and CO2 © Pearson Education Ltd 2008 This document may have been altered from the original

• Describe dative covalent (coordinate) bonding. Week 7 • Describe dative covalent (coordinate) bonding. • Use dot-and-cross diagrams to represent covalent bonding. © Pearson Education Ltd 2008 This document may have been altered from the original

Dative covalent bonding in NH4+ Week 7 Dative covalent bonding in NH4+ © Pearson Education Ltd 2008 This document may have been altered from the original

Week 7 The ammonium ion © Pearson Education Ltd 2008 This document may have been altered from the original

Week 7 The oxonium ion © Pearson Education Ltd 2008 This document may have been altered from the original

Dot-and-cross diagram of BF3 Week 7 Dot-and-cross diagram of BF3 © Pearson Education Ltd 2008 This document may have been altered from the original

Dot-and-cross diagram of SF6 Week 7 Dot-and-cross diagram of SF6 © Pearson Education Ltd 2008 This document may have been altered from the original

• Explain how the shape of a simple molecule is determined. Week 7 • Explain how the shape of a simple molecule is determined. • State that lone pairs of electrons repel more strongly than bonded pairs. • Explain and predict the shapes of, and bond angles in, molecules and ions. © Pearson Education Ltd 2008 This document may have been altered from the original

Shapes of molecules with different numbers of bonded pairs Week 7 Shapes of molecules with different numbers of bonded pairs © Pearson Education Ltd 2008 This document may have been altered from the original

Week 7 Drawing 3D diagrams © Pearson Education Ltd 2008 This document may have been altered from the original

Shapes of molecules with 0, 1, and 2 lone pairs Week 7 Shapes of molecules with 0, 1, and 2 lone pairs © Pearson Education Ltd 2008 This document may have been altered from the original

Week 7 Shape of CO2 © Pearson Education Ltd 2008 This document may have been altered from the original

Week 7 Shape of NH4+ ion © Pearson Education Ltd 2008 This document may have been altered from the original

Describe the structures of simple molecular lattices. Week 7 Describe the structures of simple molecular lattices. Describe the structures of giant covalent lattices. Explain physical properties of covalent compounds. © Pearson Education Ltd 2008 This document may have been altered from the original

Crystal structure of solid iodine Week 7 Crystal structure of solid iodine © Pearson Education Ltd 2008 This document may have been altered from the original

Different forces in iodine Week 7 Different forces in iodine © Pearson Education Ltd 2008 This document may have been altered from the original

Tetrahedral structure Week 7 Tetrahedral structure © Pearson Education Ltd 2008 This document may have been altered from the original

Hexagonal layer structure Week 7 Hexagonal layer structure © Pearson Education Ltd 2008 This document may have been altered from the original