chem102-1b - The Lewis dot structure for F2 How to draw...

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Chem 102 lec 1b W’11 1) orientation” a) the syllabus to use b) the owl ch 8 extra credit c) discuss implications d) roll call schedule: week 1 chapt 8-9 week 2 ch 9 lec 1b: a) you learned the orbitals, the electron configuration, periodic trends b) from e config we can determine the valence e’s. we can also determine the orbitals that have only 1 e not 2 (we can have 2 e’s per orbital). covalent bonds form when 2 e’s are shared in one orbital best shown by Lewis structures e.g. F has 1s2 2s2 2p5 the # valence e’s = 7 Ne has 8 (a full octet) Draw F and F2 Many atoms are most stable when full octet is formed.
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Unformatted text preview: The Lewis dot structure for F2 How to draw lewis struc: 1) count # val e 2) draw skeleton: central atom, peripheral atoms 3) draw single bond ; fill octet 4) recount the es 5) usually C =4, O=2., H=1 try: NH 3 , NO 2 + , NO 2-drawing carbon skeletons: use of line diagram: can have double bonds, triple bonds. Electronegativity and bond polarity What is shape of the molecule? Use VSEPR theory Likened to balloons repelling each other. Do by example: CH4 BF3 CO2 NH3 H2O NO2- NO2+ CH3CO2H What are the different shapes and their angles?...
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This note was uploaded on 03/05/2011 for the course CHEM 102 taught by Professor Gregsantillan during the Spring '11 term at California State University Los Angeles .

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chem102-1b - The Lewis dot structure for F2 How to draw...

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