Tutorial 3 q - CHEM 1A03 TUTORIAL#3 September 22-26 2008...

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CHEM 1A03 TUTORIAL #3 September 22-26, 2008 Questions – Chapter 9 _____________________________________________________________________ Page 1 of 2 The following problems (1-12) are based on material from Chapter 9. 1) What is the general electronic configuration (where n = principal quantum number) that best describes the halogens as a group. A) ns 1 np 6 B) ns 2 np 4 C) ns 2 sp 5 D) ns 2 np 6 E) ns 2 np 3 2. a) Which of the following gaseous atoms is smallest : P, Cl, Ca, or Si? b) Which of the following gaseous atoms has the highest ionization energy : Li, Ne, Na, Ar? 3. Arrange the following gaseous ions in the order of decreasing ionic radius (from largest radius to smallest radius) : S 2 , K + , Ca 2+ , Cl 4. Which of the following orders of the sizes of halogen atoms and ions is/are correct? a) I > I > Br b) Cl > F > I c) F > Cl > I d) Br > Cl > F e) Cl > F > F 5. Why is the electron affinity so positive for the group 2 elements? A)
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Tutorial 3 q - CHEM 1A03 TUTORIAL#3 September 22-26 2008...

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