Summary

• The QM atom
• Lasers

• Written Quiz    Timer
  
  
• Molecular bonds
  • ionic
  • covalent
  • metallic
  • van der Waals
    Example #1
    
  
  
  
  
  
• Energy levels
  • rotational applet
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  applet
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  gc6 29.q1
  What type of bond do you expect for the N₂ molecule?
  A. ionic                 B. covalent
  C. metallic            D. van der Waals
  Answer
  
  
  
  
  
  
  
   
  
  
  
  B. covalent
  Since the two atoms are identical in the N₂ molecule we expect them to share the electrons equally and form a covalent bond.