CHEM2090-PRELIM2-REVIEW - Chemistry 2090: Second Review...

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Chemistry 2090: Second Review Sheet Second Prelim: Thursday, November 11, 7:30-9:00pm You may use any calculator that does not have an alphanumeric keyboard, i.e. devices that store text are not permitted. If you can type a word onto the display, that calculator is not permitted. Graphing calculators are not permitted. Cell phones and other devices that transmit information over distance are not permitted. You will be asked to leave all personal belongings other than pencils, pens, erasers, and calculators at the front of the room where you take the exam. Outline of Topics for Review Chemical Bonding (Chapter 10) Ionic, covalent and polar covalent bonds. Lewis structures – the octet rule, assigning formal charge, exceptions to the octet rule (For the second period elements: molecules do not necessarily have to complete an octet; period 3 and higher molecules can expand their octet, e.g. SF 6 ). For period 3 or higher atoms, minimize formal charge at the expense of expanding the octet, Period 1 and 2 atoms cannot expand an octet. Resonance Forms of a given molecule and their implication for bond length/strength
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This note was uploaded on 03/01/2011 for the course CHEM 2090 taught by Professor Zax,d during the Winter '07 term at Cornell.

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CHEM2090-PRELIM2-REVIEW - Chemistry 2090: Second Review...

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