Molecular Shapes Flashcards
1
Q
What are the type of pairs that help you determine the shape?
A
Bonding pairs, Lone pairs, Bonding regions
2
Q
What is the shape with 2 bonding pairs and its angles?
A
Linear
180
3
Q
What is the shape with 3 bonding pairs and its angles?
A
Trigonal Planar
120
4
Q
What is the shape with 4 bonding pairs and its angles?
A
Tetrahedral
109.5
5
Q
What is the shape with 5 bonding pairs and its angles?
A
Trigonal Bipyramid
90 & 120
6
Q
What is the shape with 6 bonding pairs and its angles?
A
Octahedral
90
7
Q
What is the shape with 3 bonding pairs and 1 lone pair and its angles?
A
Pyramidal
107
8
Q
What is the shape with 2 bonding pairs and 2 lone pair and its angles?
A
Non-linear
104.5
9
Q
How do lone pairs affect the angle?
A
Decrease the angle by 2.5
10
Q
How do you explain electron pair repulsion?
A
- Electron pairs repel each other
- Lone pairs repel more than bonding pairs (decrease by 2.5)
- Determine the number of e-pairs (bonding and lone pairs) and the shape
