Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

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

    Gokul43201

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    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.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook