Module 4; lewis structures of covalent compounds | Chemistry | Lone Star College System

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Molecule

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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.