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Valence Shell Electron Pair Repulsion Theory

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Presentation on theme: "Valence Shell Electron Pair Repulsion Theory"— Presentation transcript:

1 Valence Shell Electron Pair Repulsion Theory
SCH3u/4C Ms. Richardson

2 VSEPR VSEPR theory is used to predict the geometric shape of the molecules based on the electron repulsive force

3 VSEPR The shapes of molecules are determined mainly by the electrons surrounding the central atom

4 Shape Determination Count the total number of valence electrons
Divide total electrons by 2 to give the total number of electron pairs Determine the shape based on the number of bonding and lone pairs

5 Linear Shape formed when there are two bonded atoms and no lone pairs.

6 Bent Forms when there are two bonded atoms with either 1 or two lone pairs around the central atom.

7 Trigonal Planar Shape that forms when there are three bonded atoms and no lone pairs.

8 Tetrahedral The shape formed when there are 4 bonding atoms with no lone pairs

9 Trigonal Pyramidal Shape formed when there are three bonded atoms and one lone pair around the central atom.

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