F11-1251-Exam_4A_Key

3forcorrectconnectivitylonepairsandbondsifcorrect1corr

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Unformatted text preview: n average of these structures, so each C‐O bond is equal in length. +2 average between single and double bond Each C‐O has a bond order and a bond length between a single and a double bond. 3 4. Draw the single best Lewis structure, obeying the octet rule whenever possible, for each of the following compounds. Be sure to list any non‐zero formal charges on each atom, and identify the overall charge of ions using brackets. +3 for correct connectivity, lone pairs, and bonds; if correct, +1 correct formal charges and bracket (a) IFCl2 (b) Selenium dioxide (c) CCl4 (d) PCl2ˉ O Se O 4 4 4 4 5. Draw one Lewis structure of periodate, IO4, including non‐zero formal charges on each atom and using brackets to indicate the overall charge, for each of (a) and (b) where… +3 for correct connectivity, lone pairs, and bonds; if correct, +1 correct formal charges and bracket (a) …the octet rule is obeyed for all atoms. (b) …the formal charge is minimized. +2 if 4 double bonds O 3+ O I O O 4 4 2‐ 3 A 6. For the following molecules, draw accurate 3‐D representations using dashes and wedges as appro...
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This note was uploaded on 09/20/2012 for the course CHEM 1251 taught by Professor Poler during the Fall '09 term at UNC Charlotte.

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