1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Why is LiBr ionic?

  1. Oct 16, 2011 #1
    Li (Electronegativity) = 1.0
    Br (Electronegativity) = 2.8

    2.8 - 1.0 - 1.8

    Ionic = 2.0+
    Polar = .4 - 2.0+
    Non polar covalent = 0 - 0.4

    1.8 doesn't it fall into the polar range? I got that wrong on a h.w. question
     
  2. jcsd
  3. Oct 16, 2011 #2
    We round the electronegativity of lithium to 1.0, and bromide to 3.0, so the difference is actually 2.0.

    It is also ionic because it is a bond between a metal and non-metal.
     
  4. Oct 17, 2011 #3

    Borek

    User Avatar

    Staff: Mentor

    This is way too handwavy for my liking. Selectively rounding you can prove anything, including 0=1.

    So why is AlCl3 covalent?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Why is LiBr ionic?
  1. Net ionic and Ionic (Replies: 1)

  2. Ionic equation (Replies: 0)

  3. Ionic Equilibrium (Replies: 2)

  4. Ionic exchange (Replies: 1)

Loading...