Electron and Molecular Geometries

2 electron groups, 0 lone pairs

linear, sp2, 180 degrees

3 electron groups, 0 lone pairs

trigonal planar, sp2, 120 degrees

3 electron groups, 1 lone pair

bent, sp2, <120 degrees

4 electron groups, 0 lone pairs

tetrahedral, sp3, 109.5 degrees

4 electron groups, 1 lone pair

trigonal pyrimidal, sp3, 107 degrees

4 electron groups, 2 lone pairs

bent, 104.5 degrees, sp3

5 electron groups, 0 lone pairs

trigonal bipyramidal, sp3d

equitorial angles = 120 degrees

between equitorial and axial angles = 90 degrees

5 electron groups, 1 lone pair

seesaw, sp3d

equitorial <120 degrees, axial < 90 degrees

5 electron groups, 2 lone pairs

T-shape, sp3d

equitorial <120 degrees, between axial & equitorial <90 degrees

5 electron groups, 3 lone pairs

Linear, sp3d, 180 degrees

6 electron groups, 0 lone pairs

octaderal, sp3d2, equitorial & axial positions = 90 degrees

6 electron groups, 1 lone pair

square pyrimidal, sp3d2, btwn axial & equitorial < 90 degrees

6 electron groups, 2 lone pairs

square planar, sp3d2, btwn equitorial = 90 degrees