(Unit 2) # of Electron Rich Regions & Electron Geometry

2 electron-rich regions

• Linear

• 180°

3 electron-rich regions

• Trigonal Planar

• 120° all angles

4 electron-rich regions

• Tetrahedral

• 109.5° all angles

5 electron-rich regions

• Trigonal Bipyramidal

• Angles of 90°, 120°, and 180°

6 electron-rich regions

• Octahedral

• Angles of 90° or 180°