Chemical Bonds notes
1. What is electronegativity?  Describe (or draw) the trend of increasing electronegativity across the periodic table.

 
 
 
 
 

2. How do you know whether a compound is covalently or ionically bonded?
 
 
 
 
 

3. What is a polar covalent bond?  Give an example of a compound with such a bond.
 
 
 
 
 

4. What are diatomic elements?  List them.
 
 
 
 
 

5. Use electron dot structures (and the octet rule) to show how atoms combine to form the following molecules:

CH4      Br2

H2O      NH3


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