Module 4; Lewis Structures of Covalent Compounds

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Molecule


Identify   the

Central Atom


Number   of atoms bonded to

central atom


Number   of *non-bonding electron pairs   around the central atom


Number   of VESPR Groups**


Draw the Lewis structure   showing the correct shape. Use element symbols, dots for non-bonding electron   pairs and dashes for bonded electrons.


Name the shape.

 

BeCl2







 

CO2







 

HCN







 

BF3







 

CH2O







 

SO2







 

CH4







 

NH3







 

H2O







* The speaker uses the term “lone electron pair” instead of non-bonding electron pair. It is the same thing.

**Number VESPR Groups is equal to the number of atoms bonded to the central atom plus the number of non-bonding pairs. 

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