CHM 2210C Chapter 2 Part C Sample Exam Answers

Chapter 2 Part C: Polarity of Molecules 10 points

Draw the dot structure for the following compounds, then state whether the molecule is polar or nonpolar:

The electronegativity of selected nonmetal elements: F 4.0; O 3.5; N 3.0; Cl 3.0; Br 2.8; C 2.5; S 2.5; H 2.1; P 2.1

__polar_______1. H2O _nonpolar ____2. CO2 __ nonpolar _ _3. C2H4 __ polar ______4. SO2 _ nonpolar ___5. SO3 __ polar _____6. HCN _ nonpolar ____7. CH4 ___ polar _____8. NH3 ___ polar _____9. CH2O _ nonpolar ____10. C2H2 _ nonpolar __Bonus. PF5 _ nonpolar __Bonus SF6

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