VSEPR Theory

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What is VSEPR Theory?

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VSEPR Theory (Valence Shell Electron Pair Repulsion Theory) is a model used to predict the geometry of individual molecules based on the repulsion between the electron pairs in the valence shell of the central atom.

Front

What determines the shape of a molecule according to VSEPR Theory?

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The shape of a molecule is determined by the number of bonded pairs and lone pairs of electrons around the central atom, as these pairs repel each other and arrange themselves to minimize repulsion.

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What is the bond angle in a trigonal planar molecule?

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The bond angle in a trigonal planar molecule is approximately 120 degrees.

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What is the shape of a molecule with 4 bonded pairs and no lone pairs?

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The shape of a molecule with 4 bonded pairs and no lone pairs is tetrahedral.

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What is the shape of a molecule with 2 bonded pairs and 0 lone pairs?

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The shape of a molecule with 2 bonded pairs and 0 lone pairs is linear.

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What is the bond angle in a tetrahedral molecule?

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The bond angle in a tetrahedral molecule is approximately 109.5 degrees.

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What is the molecular shape of BF3?

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BF3 has a trigonal planar shape.

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What is the molecular shape of CH4?

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CH4 (methane) has a tetrahedral shape.

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What is the molecular shape of H2O?

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H2O (water) has a bent shape due to the presence of lone pairs on the central atom.

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What is the molecular shape of CO2?

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CO2 (carbon dioxide) has a linear shape.