bond id s with electronegativities n.
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Bond ID’s with Electronegativities. Differences in electronegativites will help determine if a bond is ionic, polar covalent, or non-polar covalent. The separation points are 1.7, and .5 If the difference is 1.7 or more, it is considered to be ionic.

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Presentation Transcript
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Differences in electronegativites will help determine if a bond is ionic, polar covalent, or non-polar covalent.
  • The separation points are 1.7, and .5
  • If the difference is 1.7 or more, it is considered to be ionic.
  • If the difference is .5 or more, it is considered to be polar covalent
try it out
Try it out
  • What bond types are the following molecules? (use pg 151 for electronegativities)
  • SnI2
  • CuF
  • PH3
  • P2O3
try it out1
Try it out
  • What bond types are the following molecules? (use pg 151 for electronegativities)
  • SnI2
    • Sn = 1.8, I = 2.5, difference = .7
    • Polar covalent
  • CuF
    • Cu = 1.9, F = 4.0, difference = 2.1
    • ionic
  • PH3
  • P2O3
try it out2
Try it out
  • What bond types are the following molecules? (use pg 151 for electronegativities)
  • SnI2
  • CuF
  • PH3
    • P = 2.1, H = 2.1, diffence = 0
    • Non-polar covalent
  • P2O3
    • P = 2.1, O = 3.5, diffence = 1.4
    • polar covalent
finding the dipoles
Finding the Dipoles
  • polar covalent have dipoles
  • More electronegative elements have negative dipoles
  • Draw the dipoles for the polar covalent molecules
  • SnI2
  • P2O3
finding the dipoles1
Finding the Dipoles
  • I – Sn – I
  • O – P – O – P – O