2.1 VSEPR

Simple Molecular Structures

• Linear
• Trigonal Planar
• Tetrahedral
• Trigonal Pyramidal
• Bent

Linear

• 
• 180 degree angle
• 2 electron pairs
• Linear shape
• No lone pairs

Trigonal Planar

• 120 degree bond angle
• 3 electron pairs
• Trigonal Planar shape
• All electron pairs in the same plane
• no lone pairs
• 

Tetrahedral

• 109.5 degree bind angle
• 4 electron pairs
• Tetrahedral shape
• no lone pairs
• not in 1 plane
• 

Trigonal Pyramidal

• 107 degree bond angle
• 3 bond pairs and 1 lone pair
• Trigonal Pyramidal shape
• 1 lone pair
• not in one plane
• 

Bent

• 
• 104.5 degree bond angle
• 2 bond pairs and 2 lone pairs
• Bent shape
• 2 lone pairs
• not in 1 plane

The Octet rule

• Atoms of low atomic number tend to combine or become ions so that they each have 8 electrons in their valence shell, so they have the same electron configuration as the noble gases.
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