Section 9.5 Electronegativity and Polarity

Practice Test
      
  1.



Large differences in electronegativity result in __________ bonding between atoms.		  
  a.   covalent  
  b.   ionic  
  c.   no  
  d.   polar  
  Hint    
      
  2.The phosphorus pentachloride molecule is nonpolar and contains no unshared electron pairs on the phosphorus atom. What are all the possible bond angles in this molecule?  
  a.   120°  
  b.   180°  
  c.   90°, 120°, and 180°  
  d.   90° and 180°  
  Hint    
      
  3.Which element has the highest electronegativity?  
  a.   N  
  b.   O  
  c.   F  
  d.   Ne  
  Hint    
      
  4.Which compound consists of nonpolar molecules?  
  a.   H2S  
  b.   PH3  
  c.   AsH3  
  d.   SiH4  
  Hint    

 
   
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