Q:
      
      
         
            
which of the following molecule contains a nonpolar covalent bond?
         
       
      
      
      
          
      
      
          Answer & Explanation
         Answer: A) Br2         
         
Explanation: Br-Br.
In Br2, two of the same atoms, pull on each side of the bond is equal making it as non-polar.
The other options all include a significantly more electronegative atom (the oxygens and the chlorine), so those bonds are all polar covalent.
       
      
      
      
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