Geometry Flashcards
1
Q
Electron pair geometry
A
Relative positions in 3-D space of all bonding pairs and lone pairs of valence electrons on the central atom
2
Q
Molecular geometry
A
Relative positions of atoms in a molecule
3
Q
Steric number
A
Number of atoms bonded to central atom + number of lone pairs on central atom
4
Q
SN=3, no lone pairs
A
Trigonal planar; 120°
5
Q
Sn=3, lone pairs = 1
A
Trigonal planar; bent; <120°
6
Q
Sn=4, no lone pairs
A
Tetrahedral; 109.5°
7
Q
Sn=4, lone pairs=1
A
Trigonal pyramidal; <109.5°
8
Q
Sn=4, lone pairs=2
A
Bent; <109.5°
9
Q
Sn=5, no lone pairs
A
Trigonal bipyramidal; 90°, 120°
10
Q
Sn=5, lone pairs =1
A
Seesaw; < 90°, <120°
11
Q
Sn=5, lone pairs=2
A
T-shaped; <90°
12
Q
Sn=5, lone pairs= 3
A
Linear; 180°
