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

Distinguish covalent and partially covalent chemical bonds

  1. Mar 22, 2014 #1
    I read some books which mention about covalent and partially covalent chemical bonds. However, I cannot distinguish between them. Who can help me?
    Thank you very much!
     
  2. jcsd
  3. Mar 22, 2014 #2

    Borek

    User Avatar

    Staff: Mentor

    The only purely covalent bonds I can think of are those in diatomic molecules of gases. In every other case electronegativity of the atoms is different and the bond has some ionic character and some covalent character.

    Please note covalent/ionic classification is not precise - while there are obvious differences between bonds (compounds) on both ends of the scale, there is a continuum of intermediary states. Where we put the border between one type of the bond and other type of the bond is just a convention.
     
  4. Mar 22, 2014 #3

    DrClaude

    User Avatar

    Staff: Mentor

    Just to add a precision: that would be homonuclear diatomic molecules. You can add also other special cases like the CC bond in ethane, where the molecule is completely symmetric.
     
  5. Mar 22, 2014 #4

    Borek

    User Avatar

    Staff: Mentor

    Good point, thanks. That's what I had on mind, but the wording was lousy.
     
  6. Mar 23, 2014 #5

    DrDu

    User Avatar
    Science Advisor

    Even homonuclear bonds have an ionic contribution, and it is not easy to quantify the respective portion of covalent vs. ionic bonding. One appealing methods is the Bader analysis of "atoms in molecules":
    http://www.chemistry.mcmaster.ca/aim/
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Distinguish covalent and partially covalent chemical bonds
  1. Covalent bonding (Replies: 7)

  2. Covalent bonds (Replies: 2)

  3. Covalent Bonding (Replies: 8)

Loading...