Experiment 1

Experiment 1 - Experiment 1 Molecular Geometries of...

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Experiment 1 Molecular Geometries of Covalent Molecules: Lewis Structures and VSEPR Theory
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Purpose To use Lewis structures and VSEPR Theory to predict the geometries and polarity of covalent molecules; to use Valence Bond Theory to predict hybridization around the central atom.
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Theory VSEPR Theory Electron pairs (lone pairs or bonded pairs) repulsions predict geometry (five shapes) Valence-Bond Theory Overlap of atomic orbitals between the central atom and the bonding atoms in a compound; new valence orbitals are produced that are arranged in space to give a shape predicted by VSEPR Theory
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Lewis Structures – A Review 2nd row elements C, N, O, F observe the octet rule . The total number of bonding and lone pair electrons surrounding these atoms in a molecule is 8. Hydrogen can have no more than 2 electrons. In general, the elements C, N, O and S can form double bonds; C and N can form triple bonds Triple bonds > Double bonds > Single bonds in terms of strength
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Experiment 1 - Experiment 1 Molecular Geometries of...

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