worksheet 5 - a . XeF 6 b . BCl 3 c . AlH 3 d . SF 6 e ....

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CH301 Fall 2010 Worksheet 5: Drawing Lewis Structures 1. Draw the Lewis structure of the following compounds: a . NaCl b . CaBr 2 c . K 2 S d . Cs 3 P 2. Draw all correct Lewis structures for the following compounds: a . O 3 b . NO 3 - c . SO4 2 - d . HPO 4 2 - 3. Draw the correct Lewis structures for the following compounds a . C 2 H 6 (ethane) b . C 2 H 4 (ethylene) c . C 2 H 2 (acetylene) d . CH 2 O (formaldehyde) e . NO (nitrous oxide) f. C 3 H 4 (allene) g . N 2 (dinitrogen) h . CN - (cyanide) 4. Draw the following Lewis structures (Hint: the Lewis structures look a lot like how they’re written and c and d are waaaay harder than anything you will see on the exam.) a . H 3 CCOOH (acetic acid) b . H 2 NCONH 2 (urea) c . H 2 NH 3 CCHCOOH (the amino acid alanine) *hint: think of H2N and H3C connecting to the same central atom
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d . H 3 CH 2 COCH 2 CH 3 (diethyl ether) *hint: this molecule has a plane of symmetry at oxygen 5. Draw the following Lewis structures:
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Unformatted text preview: a . XeF 6 b . BCl 3 c . AlH 3 d . SF 6 e . PBr 5 6. Draw the following Lewis structures and assign proper formal charge to each atom: a . CN-b . SO 4 2-c . O 3 d . N 2 O 7. Which salt in each pair or set below has the greatest lattice energy? a. KI vs. KBr b. MgS vs. BeO vs. MgO vs. BeS c. NaCl vs. MgS 8. Calculate EN for each pair of elements below. H-H EN = C-H EN = F-C EN = LiF EN = 9. What is another name for the too odd exception to the octet rule? How do you decide which atom gets the odd electron? 10. Draw the Lewis structure of NO 2 . What two features of this molecule are interesting? 11. a. BF 3 b. N 2 O (hint N is the central atom) 12. Draw 3 resonant Lewis structures for OCN-. Determine which makes the greatest contribution by assigning formal charge....
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This note was uploaded on 10/10/2011 for the course CH 50995 taught by Professor Laude during the Fall '10 term at University of Texas at Austin.

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worksheet 5 - a . XeF 6 b . BCl 3 c . AlH 3 d . SF 6 e ....

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