Chap10(6-7)Dec3FA08a

Chap10(6-7)Dec3FA08a - unhybridized half-filled p orbitals...

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General Chemistry 109 FALL 2008 3 December 2008 ANNOUNCEMENTS:
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sp3 Hybridization CH 4
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For sp 3 d and sp 3 d 2 hybrid orbitals the central atoms are from ______________________________. __________________- . sp3d Hybridization PCl 5
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sp3d2 Hybridization SF 6
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Composition and orientation of hybrid orbitals
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Molecular formula Lewis structure Molecular shape and e - group arrangement Hybrid orbitals Steps from molecular formula to hybrid orbitals.
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Sigma ( σ ) Bonds The imaginary line which connects the center of the two nuclei involved in a covalent bond is known as the _______________________. _____________ : electron density lies on the axis between the nuclei. All ________ bonds are _________ bonds. 2200 σ -Bonds can be made up of s or p orbitals as well as sp , sp 2 , or sp 3 hybrid orbitals. Internuclear axis
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Pi ( π ) Bonds The side to side overlap of unhybridized p orbitals produces a _______________ . π bonds : ________________ lies above and below the plane of the nuclei. A π bond will not form unless there are
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Unformatted text preview: unhybridized half-filled p orbitals on the bonded atoms. The bond can form only if the p orbitals of both atoms are in the same ______ and, thus, are parallel to each other. One bond holds two electrons that move through both regions of the bond. IS IT PI OR SIGMA? Multiple Bonds ______ bonds are bonds ______ bonds contain one and one bond ______ bonds contain one and two bonds H H C C = H H H H N N Ethane, C 2 H 6 The carbons each have sp 2 hybridization. How do we account for the double bond, the second electron pair? HINT: how many p-orbitals are there? How many have been used for hybridization? Bonding in Ethene Ethene, C 2 H 4 (also called ethylene) _____-1,2-dichloroethylene ____-1,2-dichloroethylene Ethyne, C 2 H 2 (also called acetylene) Carbon vs Silicon ( bonds ) Why doesnt silicon form double bonds similar to carbon?...
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Chap10(6-7)Dec3FA08a - unhybridized half-filled p orbitals...

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