exam 1B key

exam 1B key - Chemistry 1C, Exam 1 April 23, 2008 First...

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Chemistry 1C, Exam 1 First letter of your last name: _________ April 23, 2008 FORM B Name ( last, first ): _____________________________________________ Perm #: ____________________________ INSTRUCTIONS: All cell phones and portable electronic devices must be turned off for the duration of the exam. SCANTRON FORM: Use a PENCIL 1) write you name on the form (front and back) 2) Bubble in FORM B 3) Bubble in your Perm number (7 digits only) An information page is provided separately. No other notes or books are allowed. There are 6 pages and 30 questions. Each multiple choice question is worth 1 point. Turn in the exam and Scantron form. 1) (6 points) Give the electron configuration of PF (i.e. add the correct number electrons to the molecular orbital diagram). E P F 3s 3p 2s 2p PF σ σ∗ σ σ∗ π π∗ 1
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2) (4 points) In the space provided below draw two valid resonance structures for ozone, O 3 . O O O O O O 3) (1 point) Using VSEPR theory which molecular geometry should O 3 adopt? Bent or V-shaped 4) (4 points) In the space provided below draw the Lewis structure for AsCl 4 + . As Cl Cl Cl Cl 5) Based on your response in question 2, and given the following statements: (i) O 3 does not obey the octet rule. (ii) O 3 does obey the octet rule (iii) O 3 has a dipole moment (iv) O 3 has no dipole moment (v) Both O-O bonds are the same length (vi) The O-O bonds are different lengths Which is true: a) Statements (i), (iii), and (vi) are true. b) Statements (i), (iv), and (v) are true.
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exam 1B key - Chemistry 1C, Exam 1 April 23, 2008 First...

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