Van 't
The point group corresponding to this molecular geometry has eight C3 elements, but no C4 or C5 elements. Addition-eliminations to ketones form an anionic intermediate with this geometry. Coordination complexes with this geometry split the d orbitals so that three are high-energy. Umbrella inversions during SN2 reactions occur on atoms with this geometry. Every atom in (*)  diamond has this geometry. The cosine of its bond angle is negative one-third. Van 't Hoff discovered that atoms with this geometry are asymmetric and form enantiomers. This geometry, which is represented using wedges and dashed lines, occurs at any saturated carbon atom with sp3 hybridization and 109 degree bond angles. For 10 points, name this molecular geometry found in methane.
The point group corresponding to this molecular geometry has eight C3 elements, but no C4 or C5 elements.
tetrahedral  geometry [or  tetrahedron ] 