05 Notes - Polarity

05 Notes - Polarity - Pluchino Regents Chemistry Bonding...

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Pluchino – Regents Chemistry Bonding and Molecular Shape – 05 Polarity Aim: How do we determine if a bond or molecule is polar? Do Now: What is the definition of electronegativity? How might it effect the sharing of electrons? Bond Polarity Using electronegativity differences, we can determine if the electrons in a bond are shared evenly or unevenly 0.4 or less, the electrons are shared fairly evenly More than 0.4, the electrons are not shared evenly When the electrons are shared evenly, the bond is nonpolar Example: H-H 2.1 – 2.1 = 0 When the electrons are not shared evenly, the bond is polar Example: H-Cl 3.0 – 2.1 = 0.9 Practice: Will the resulting bond be polar or nonpolar? 1. C and H 2. O and H 3. F and O 4. N and S 5. P and H 6. Cl and O Molecule Polarity Predicting Molecular Polarity 1. Draw Lewis structure with correct geometry and identify each bond as either polar or nonpolar.
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This note was uploaded on 01/01/2012 for the course CHEM 101 taught by Professor Donahue during the Spring '11 term at Long Island U..

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05 Notes - Polarity - Pluchino Regents Chemistry Bonding...

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