Unit 6 Molecular Geometry and Polarity Overview of bond types: ionic covalent metallic.
Molecular Geometry and Polarity
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Molecular Geometry and Polarity
description
Molecular Geometry and Polarity. Molecular Shapes. Molecular shape determines chemical and physical properties Electrons repel each other resulting in the molecular shape Lone pairs are not shared between protons and therefore repel slightly more. Hybridization. Atomic orbitals mix - PowerPoint PPT Presentation
Transcript of Molecular Geometry and Polarity
Molecular Geometry and
Polarity
Molecular Shapes
OMolecular shape determines chemical and physical properties
OElectrons repel each other resulting in the molecular shape
OLone pairs are not shared between protons and therefore repel slightly more
OAtomic orbitals mix to form new identical orbitals
Hybridization
Determine Molecular Geometry and Hybridization
OBF3
ONH4+
OOCl2OBeF2
OCF4
OCS2
OCCl2F2
ONCl3
Bond Polarity OUnequal sharing of electrons due to differences in electronegativity
0 - 0.4 0.5 - 1.7 Above 1.7
Molecular Polarity
Molecular Polarity
OMolecules that are symmetrical tend to be nonpolar covalent molecules
OMolecular Dipole-the overall direction of pull on the molecule
PHET Simulation
ODraw the following molecules and label the dipole of the moleculeHF F2 H2O
CO2 NH3 CH2O
CH4 CH2F2 CHCl3
Properties of Covalent Compounds
OLow melting and boiling points
Properties of Covalent Compounds
OMany molecules exist as gases
OSoft solidsOParaffin
Properties of Covalent Compounds
OPoor Conductors of Electricity
Review Problems: pg. 272
#72, 84, 89-92, 95, 96, 97 (a-c), 98 (a, c), 99, 102, 104, 105-117odds
