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Here are the answers to the Odd Number problems for 12 Problems on Bond Polarity Determination (using Bond Polarity Worksheet) (showed polar bond designation in ( ) assuming elements arrangement in problem).
1) Non-polar bond(ΔEN = 0.4)
3) Polar bond (ΔEN =0.9) (<--+ above elements)
5) Ionic, forms ions (ΔEN = 1.8)
7) Polar bond (ΔEN = 1.0) (+--> above elements)
9) Polar bond (ΔEN =1.2) (<--+ above elements)
11) Ionic, form ions (ΔEN = 2.0)