Question

How many valence electrons does S^2 have? A. 3 B. 8 C. 15 D. 1 E. 18 52. Which of the following ground-state ions has the largest number of unpaired electrons? A. Cr^2+ B. Mn^2+ C. Ni^2+ D. Cu^+ E. Co^2+ 53. Arrange the following ions in order of increasing ionic radius: K^+, P^3-, S^2-, CI^-, increasing radius A. K^+ < CI^- < S^2- < P^3- B. CI^- < S^2- < P^3- < K^+ C. K^+ < P^3- < S^2- < CI^- D. CI^- < S^2- < K^+ < P^3- E. O^3- < S^2- < CI^- < K^+ 54. Identify the major ionic species present in an aqueous solution of C_9H_12O_4 (glucose). A. 6 C^-, 12 H^+, 6 O^- B. C_6, 12 H^+, 6 O^2- D. 6 CH^2+, 6 O^2- E. no ions are present 55. Define electronegativity: A. an atoms ability to donate valence electrons to another atom B. an atoms ability to form an ionic and with another atom C. an atoms ability to attract electrons that are shared in a chemical bond D. an atoms ability to form a cation E. an atoms ability to form double and triple bonds 56. What type of chemical bond holds the atoms together within a water molecule? A. Ionic bond B. Nonpolar covalent bond C. Polar covalent bond D. Coordinate covalet bond E. All of the above 57. Which of the following is the electron configuration of the iron (III) ion? A. [Ar]4s^23d^9 B. [Ar]3d^5 C. [Ar]4s^23d^3 D. [Ar]3d^5 E. [Ar]4s^13d^5 58. Which of the following is an acidic oxide? A. CO_2 B. CI_2O_7 C. As_2O_3 D. SO_2 E. all of the above 59. Give the number of lone pairs around the central atom and the molecular geometry of CCI_4. A. 0 lone pairs, tetrahedral B. 1 lone pair, trigonal bipyramial C. 0 lone pairs, square planar D. 2 lone pairs, square planar E. 1 lone pair, square pyramidal 60. Which of the following is an amphoteric oxide? A. AI_2O_3 B. MgO C. Na_2O D. SO_2 E. CI_2O_7 61. According to the VSEPR theory, the geometry of the NH_4^+ molecule is A. pyramidal. B. distorted tetrahedron (seesaw). C. tetrahedral. D. square planar. E. trigonal planar 62. List all types of bonding present in the molecule SO_3 I. Ionic bond II. polar covalent bond II. nonpolar covalent bond A) II only B) I only C) III only D) I and II E) II and III

Answer 1

51)B

52)B

53)A

54)E

55)C

56)C

57)B

58)E

59)A

60)A

61)C

62)A