Chemistry I lab Vsepr worksheet final PDF

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This is a lab worksheet for the general chemistry I lab . It explains and has questions about the VSEPR theory and diagrams....

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VSEPR and Molecular Modeling Lab Spring 2021 Hybrid

For this lab, there will be no formal lab report. You will follow the instructions below and complete the chart. You must turn this document in with all parts filled in according to the instructions. Objectives 1. To predict structure and polarity of a compound based on its Lewis Dot and VSEPR Theory Background Many molecules obey the octet rule and their Lewis-Dot structures are straightforward. Recall that to draw the Lewis-Dot structure of a molecule obeying the octet rule, eight electrons on each atom (except hydrogen and a few others) are arranged in four pairs. Each pair either participates in a covalent bond or is present as a lone pair. Some molecules have an odd number of valence electrons or may have an expanded octet. According to the Valence Shell Electron Pair Repulsion (VSEPR) Theory, the areas of high electron density move as far apart from each other as possible, without leaving the atom. It is the repulsion of lone pairs of electrons that causes the geometry or molecular structure of the molecule. The molecular shape is determined by the positions of the atoms in a molecule, which are influenced by bonds and lone pairs. The possible shapes for the molecules in this lab are linear, bent, trigonal pyramidal, tetrahedral, and trigonal planar. Shape Linear Trigonal planar Tetrahedral Trigonal bipyramidal Octahedral Bent (V shaped) Trigonal pyramidal Bent (V shaped) SeeSaw T Shaped Linear Square pyramidal Square planar

Electron Domains 2 3 4 5 6 3 4 4 5 5 5 6 6

Number of Lone Pairs 0 0 0 0 0 1 1 2 1 2 3 1 2

Bond Angle 180° 120° 109.5° 90° (ax) and 120° (eq) 90° 95°...