Problem: Predict the approximate bond angle in the following molecule.

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Electron Regions          Electronic Geometry          Bond Angles

2                                      linear                                    180˚

3                                      trigonal planar                      120˚

4                                      tetrahedral                            109.5˚

5                                      trigonal bipyramidal              90˚, 120˚, and 180˚

6                                      octahedral                            90˚ and 180˚

Central atom O → 2 atoms + 1 lone pair → 3 groups → AX3 → trigonal planar

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Predict the approximate bond angle in the following molecule.

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