OC4271590Lv1

17 Dec 2021

Intro to Molecular Geometry, notes on VSEPR theory. 

***Please refer to the attached files for the complete details***

Molecular Geometry

VSEPR  Theory - allows you to look at a 20-dimensional model of a lewis dot structure and see what the 3-dimensional molecule will look like.

Examples:

            Cl --- Be --- Cl     

 

VSEPR: Valence Shell Electron Pair Repulsion 

•  Negative charges repel each other so valence shell electrons are trying to separate.

 

• This is a linear snape
• Furthest away
• 2 thing around a central atom
• Doesn't have to be singular bonds

 

• This is a trigonal planner
• Doesn't have ro be singular bonds
• 3 thing around a central atom

 

• Take the two atoms on top into consideration
• 3 things arounds the central atom
• Similar to trigonal planner
• This molecule is called a "bent" molecule

 

• Tetrahedral molecule. All amples  
• 4 things around the central atom

 

• Trigonal pyramidal
• The atom on top is replaced by an unshaved electron pair
• The atom on top pushes harder, less angles