Molecular Geometry Flashcards
Trigonal planar
Total: 3
3 atoms bonded to central atom
0 lone pairs on central atom
120 degree bond angle between atoms
Bent (always polar)
Total: 3
2 atoms bonded to central atom
1 lone pairs on central atom
Less than 120 degree bond angle between atoms
Or Total: 4 2 atoms bonded to the central atom 2 lone pairs on the central atom Less than 109.5 degree bond angle between atoms
Tetrahedral
Total:4
4 atoms bonded to central atom
0 lone pairs on the central atom
109.5 degree bond angle between atoms
Linear
Total: 2
2 atoms bonded to central atom
0 lone pairs on central atom
180 degree bond angle between atoms
Or
Total: 5
2 atoms bonded to central atom
3 lone pairs on central atom
180 degree bond angle between atoms
Trigonal pyramidal (always polar)
Total: 4
3 atoms bonded to central atom
1 lone pairs on central atom
Less than 109.5 degree bond angle between atoms
Trigonal bipyramidal
Total: 5
5 atoms bonded to central atom
0 lone pairs on central atom
90 and 120 degree bond angle between atoms
See-saw (always polar)
Total: 5
4 atoms: bonded to central atom
1 lone pair in central atom
T-shaped (always polar)
Total: 5
3 atoms: bonded to central atom
2 lone pairs on central atom
Less than 90 degree bond angle between atoms
Octahedral
Total: 6
6 atoms bonded to central atom
0 lone pairs on the central atom
90 degree bond angle between atoms
Square pyramid (always polar)
Total: 6
5 atoms bonded to central atom
1 lone pair on the central atom
90 or less than 90 degree bond angle between atoms
Square planar
Total: 6
4 atoms bonded to central atom
2 lone pairs on central atom
90 degree bond angle between atoms
