<p>AP/IB Chemistry Name: Ch 8/9 AP Test</p><p>Multiple Choice – Circle the letter of the best response:</p><p>1. The electron pair in a C–F bond could be considered</p><p> a. Closer to C because carbon has a larger radius and thus exerts greater control over the shared electron pair.</p><p> b. Closer to F because fluorine has a higher electronegativity than carbon</p><p> c. Closer to C because carbon has a lower electronegativity than fluorine</p><p> d. An inadequate model since the bond is ionic</p><p> e. Centrally located directly between the C and F</p><p>2. Which of the following has the greatest bond strength?</p><p> a. B2 2– b. O – c. CN + d. O2 – e. NO </p><p>3. Which of the following molecules is non-polar overall?</p><p> a. SF4</p><p> b. SF2</p><p> c. CCl4</p><p> d. H2S</p><p> e. OCl2</p><p>2 4. Atoms which are sp hybridized can form _____ pi bond(s).</p><p> a. 0</p><p> b. 1</p><p> c. 2</p><p> d. 3</p><p> e. 4</p><p>For 5-6 consider the skeletal structure shown below for the compound C2N2:</p><p>N – C – C – N</p><p>Complete the Lewis structure above and answer the following:</p><p>5. How many of the atoms are sp hybridized?</p><p> a. 0</p><p> b. 1</p><p> c. 2</p><p> d. 3</p><p> e. 4</p><p>6. How many pi bonds does the molecule contain?</p><p> a. 0</p><p> b. 2</p><p> c. 4</p><p> d. 6</p><p> e. 7 Answer Question 7 in the space provided below:</p><p>Work the following problem. Answer neatly, as if you were working the problem for an AP/IB Exam.</p><p>- + 7. GeCl4 SeCl4 ICl4 ICl4 The species represented above all have the same number of chlorine atoms attached to the central atom. (a) Draw the Lewis structure (electron-dot diagram) of each of the four species. Show all valence electrons in your structures.</p><p>(b) On the basis of the Lewis structures drawn in part (a), answer the following questions about the particular species indicated.</p><p>(i) What is the Cl-Ge-Cl bond angle in GeCl4?</p><p>(ii) Is SeCl4 polar? Explain.</p><p>- (iii) What is the hybridization of the I atom in ICl4 ?</p><p>+ (iv) What is the geometric shape formed by the atoms in ICl4 ?</p>