Section 9.5 Electronegativity and Polarity

Practice Test
      
  1.Which element has the highest electronegativity? SC.A.1.4.1  
  a.   O  
  b.   N  
  c.   Ne  
  d.   F  
  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.   90° and 180°  
  b.   120°  
  c.   180°  
  d.   90°, 120°, and 180°  
  Hint    
      
  3.



Large differences in electronegativity result in __________ bonding between atoms. SC.A.1.4.5		  
  a.   covalent  
  b.   no  
  c.   polar  
  d.   ionic  
  Hint    
      
  4.Which compound consists of nonpolar molecules? SC.A.1.4.5  
  a.   AsH3  
  b.   SiH4  
  c.   PH3  
  d.   H2S  
  Hint    

 
   
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