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CHEM 111 (69)

Orbital overlap, polar bond definitions, molecular polarity

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CHEM 111
Dana Johnson

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25 October Announcements Review session tonight A103 8 – 10 pm Recitations this week Exam preparation All Tuesday slots are open Orbital overlap review Bonds form when partially-filled orbitals overlap Atomic orbitals can overlap or form hybrids first Hybridization is given by the number of electron groups H – C ≡ C – H C has 2 groups 2 hybrid orbitals → 2 atomic orbitals Sp hybridized Clicker question For the molecule TeF , which statement below is false? 5 3 2 a. The Te atom is sp d hybridized b. The bond angles are all < 90° c. The Te – F bond is formed from 2 different orbitals overlapping d. There are no lone electron pairs around Te e. The orbital diagram for Te would have unhybridized d orbitals Polar bond definitions Nonpolar covalent bonds –
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