PSC 101-Chapter 5—Chemical Bonding. Questions and Answers

PSC 101-Chapter 5—Chemical Bonding. Questions and Answers MULTIPLE CHOICE 1. Which of these theories is utilized in the prediction of molecular shapes? a. Dalton's Theory b. VSEPR Theory c. Bohr's Atomic Theory d. Lewis Bonding Theory e. Einstein's Theory of Relativity ANS: B PTS: 1 2. What does the V in VSEPR theory stand for? a. very b. variable c. valence d. vanadium e. volume ANS: C PTS: 1 3. Which of these substances is an ionic compound? I. NCl3 II. MgF2 III. AlBr3 IV. CH4 a. I and II b. II and III c. II and IV d. II, III and IV e. II only ANS: B PTS: 1 4. Which of the following is true for sodium? a. It is most stable as an atom. b. It is most stable as a negatively charged ion. c. It is most stable as a positively charged ion. d. All forms of sodium are very stable. e. All forms of sodium are very unstable. ANS: C PTS: 1 5. Which of these substances is covalent compound? I. CaO II. H20 III. PF3 IV. CH4 Test Bank Chemistry in Focus, 5e 1 a. I and II b. II and III c. II and IV d. II, III and IV e. II only ANS: D PTS: 1 6. Which of these is not a fundamental postulate of bonding proposed by Lewis? a. Valence electrons are shared in covalent bonding. b. The valence shell is involved in chemical bonding. c. Atoms bond to achieve a more stable configuration. d. Atoms bond to achieve an octet of electrons in the valence shell. e. A stable electron configuration has six electrons in the valence shell. ANS: E PTS: 1 7. Which of these is the correct Lewis dot structure for chlorine? a. b. c. d. e. ANS: C PTS: 1 8. Which of these is the correct Lewis dot structure for sulfur? a. b. c. d. e. ANS: D PTS: 1 9. Which of these is the most likely identity of element A in the Lewis dot structure? a. Ca b. Li c. Al d. Cs e. P ANS: A PTS: 1 Test Bank