Chapter+10-template-1[1]

Chapter+10-template-1[1] - Chapter 10: The shape of...

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Chapter 10: The shape of molecules Lewis do structures of covalent species: We indicate: USE THE FOLLOWING GUIDELINES TO DRAW LEWIS
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Guidelines for Writing Lewis Diagrams 1) Determine total number of VEs (ns and np orbitals only). 2) Draw a molecular structure with single bonds.
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3) Determine # of remaining VEs 4) Fill in the octets around the terminal atoms (except H which can have only 2e-) and again calculate the number of VEs remaining 5) Place remaining electrons around central atom
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5 possible scenarios 1) # electrons used to complete octets = # electrons available .
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5 possible scenarios 2) # electrons used to complete octets < # electrons available .
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5 possible scenarios 3) # electrons needed to complete octets > # electrons available .
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5 possible scenarios 4) Incomplete octet: Exceptions .
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5) It is impossible to obey the octet rule because total # of valence e- is odd. (paramagnetic compounds). Radical:
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This note was uploaded on 11/20/2011 for the course CHEM 1035 taught by Professor Jgdillard during the Fall '07 term at Virginia Tech.

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Chapter+10-template-1[1] - Chapter 10: The shape of...

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