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Homework Help: Valence electron of CN?

  1. Dec 5, 2007 #1
    Sry...but for some reason I cant start a new thread and i need a little help.

    Is the valence electron of CN 9?
  2. jcsd
  3. Dec 5, 2007 #2


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    Are you refering to the total number of valence electrons? And is it CN or CN- that you want this for?

    Show us what you tried. How did you get the number 9?
  4. Dec 5, 2007 #3
    Perhaps the easiest way to figure this out, is to look at both of that atom's group numbers. This will tell you the number for valence electrons. For a molecule, just add those numbers.
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