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

Condition for formation of ionic bond

  1. Apr 19, 2015 #1
    In my textbook one of the conditions for formation of ionic bond is given as
    The cation should be large and anion should be small
    But in the image of Nacl lattice structure ,we can see that it is other way around

    I am not getting the reason,Is my textbook wrong ?
    Or it has something to do with difference between ionic bond and lattice structure.I mean the picture I have attached is of crystal lattice not of single ionic bond between Sodium and chloride ion.

    Thanks.
     
  2. jcsd
  3. Apr 19, 2015 #2
    upload_2015-4-19_12-56-42.jpeg
     
  4. Apr 19, 2015 #3

    Borek

    User Avatar

    Staff: Mentor

    Pure nonsense, no such condition.

    Additionally, there is no such thing as a "single ionic bond" and a "single ionic molecule". All pure ionic substances exist only as ionic crystals (well, is some highly exotic conditions you can observe single molecules, it doesn't change the validity of the general statements).
     
  5. Apr 19, 2015 #4
    That means my textbook is wrong.
     
  6. Apr 19, 2015 #5

    Borek

    User Avatar

    Staff: Mentor

    Looks like.
     
  7. Apr 19, 2015 #6
    And there is no such condition as
    anion should be large and cation should be small either,right?
     
  8. Apr 19, 2015 #7

    Borek

    User Avatar

    Staff: Mentor

    No, sizes don't matter at all.

    They matter when it comes to the type of the lattice that they will build, but that's another story.
     
  9. Apr 19, 2015 #8
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Condition for formation of ionic bond
  1. Ionic bond strength (Replies: 6)

Loading...