Lecture 11.11.09

Lecture 11.11.09 - Wednesday November 11 W h ic h s ta te m...

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Wednesday, November 11 CHEM 1251, Fall 2009 1 Which statement is incorrect ? A. The n = 3 energy level contains 9 orbitals total. B. The n = 4 energy level contains five d orbitals. C. The 4d orbitals can hold up to 10 electrons total. D. The n = 4 energy level can hold up to 16 electrons total. CQ #1 2 A. 2 --> 3 B. 3 --> 2 C. 7 --> 3 D. 4 --> 3 E. 2 --> 1 n initial n final An emission spectrum is pictured below. Suppose the line marked with an “X” is due to a transition involving the n = 2 and n = 3 energy levels. Identify a transition that could produce the line marked “Z” X Z CQ #2 3 Draw a Lewis structure for the nitrate ion, NO 3 - . How many single and double bonds do you get? A. 3 single bonds B. 1 single and 2 double bonds C. 2 single and 1 double bonds D. 3 double bonds CQ #3 4 Refer to your Lewis structure for the nitrate ion. What is the formal charge on N? A. -2 B. -1 C. 0 D. +1 E. +2 CQ #4 5 Refer to your Lewis structure for the nitrate ion. How many resonance structures contribute to the overall structure?
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Lecture 11.11.09 - Wednesday November 11 W h ic h s ta te m...

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