1. Bond ID’s with Electronegativities

2. 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

3. Try it out What bond types are the following molecules? (use pg 151 for electronegativities) SnI 2 CuF PH 3 P 2 O 3

4. Try it out What bond types are the following molecules? (use pg 151 for electronegativities) SnI 2 Sn = 1.8, I = 2.5, difference =.7 Polar covalent CuF Cu = 1.9, F = 4.0, difference = 2.1 ionic PH 3 P 2 O 3

5. Try it out What bond types are the following molecules? (use pg 151 for electronegativities) SnI 2 CuF PH 3 P = 2.1, H = 2.1, diffence = 0 Non-polar covalent P 2 O 3 P = 2.1, O = 3.5, diffence = 1.4 polar covalent

6. Finding the Dipoles polar covalent have dipoles More electronegative elements have negative dipoles Draw the dipoles for the polar covalent molecules SnI 2 P 2 O 3

7. Finding the Dipoles I – Sn – I O – P – O – P – O