Number of Number of lone Shape name and 3-D Shape atoms bonded pairs of electrons bond angles drawing to central on the central atom atom (Bonding (Nonbonding domains) domains) Linear 2 0 180° Bent 2 1 120° Bent 2 2 105° Trigonal 3 0 Planar 120° Trigonal 3 1 Pyramidal 107° Tetrahedral 4 0 109°
Number of atoms bonded to central atom (Bonding domains) Number of lone pairs of electrons on the central atom (Nonbonding domains) Shape name and bond angles 3-D Shape drawing 2 0 Linear 180° 2 1 Bent 120° 2 2 Bent 105° 3 0 Trigonal Planar 120° 3 1 Trigonal Pyramidal 107° 4 0 Tetrahedral 109°