Exam2B - CHEM 1211K Exam Two Fall 2010 1 How many lone...

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CHEM 1211K Exam Two Fall 2010 Form B 1 1. How many lone pairs of electrons are found on the central atom in the Lewis structure of the compound ICl 3 ? A) 2 B) 3 C) 4 D) 8 E) 11 2. Which best describes the number and type of bonds in the HCN molecule? A) 2 double bonds B) 2 single bonds C) 1 double bond and 1 single bond D) 1 single bond and 1 triple bond E) 1 double bond and 1 triple bond 3. What is the formal charge on the Xe atom in XeF 4 ? A) 0 B) - 4 C) +2 D) +4 E) -1 4. Which of the following has the largest atomic or ionic radius? A) S 2- B) Cl C) Cl - D) K + E) S 5. Arrange the elements in order of increasing first ionization energy: Cl, Ga, Si A) Si < Ga < Cl B) Ga < Si < Cl C) Cl < Si < Ga D) Cl < Si < Ga E) Si < Cl <Ga
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CHEM 1211K Exam Two Fall 2010 Form B 2 6. Which statement best explains why the electron affinity of B is less positive than that of Li? A) B has electrons in p orbitals, so it is lower in energy. B) Li does not want to gain an electron because it already has a half-full s orbital.
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Exam2B - CHEM 1211K Exam Two Fall 2010 1 How many lone...

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