Covalent Bonding & Molecular Compounds Multiple Choice Review

Transcription

1 Slide 1 / 109 ovalent onding & Molecular ompounds Multiple hoice Review

2 Slide 2 / Which pair of elements is most apt to form a molecular compound with each other? aluminum, oxygen magnesium, iodine sulfur, fluorine potassium, lithium barium, bromine

3 Slide 3 / The correct name for SO is. sulfur oxide sulfur monoxide sulfoxide sulfate sulfite

4 Slide 4 / The correct name for l 4 is. carbon chloride carbon tetrachlorate carbon perchlorate carbon tetrachloride carbon chlorate

5 Slide 5 / The correct name for N 2 O 5 is. nitrous oxide nitrogen pentoxide dinitrogen pentoxide nitric oxide nitrogen oxide

6 Slide 6 / The name of Pl 3 is. potassium chloride phosphorus trichloride phosphorous(iii) chloride monophosphorous trichloride trichloro potassium

7 Slide 7 / The name of the binary compound N 2 O 4 is. nitrogen oxide nitrous oxide nitrogen(iv) oxide dinitrogen tetroxide oxygen nitride

8 Slide 8 / The correct name for H 2 O is. hydrogen oxide hydrogen(ii) oxide dihydrogen oxide dihydrogen monoxide hydrogen dioxide

9 Slide 9 / The correct name for XeF 4 is. monoxenon pentafluoride xenon pentafluoride xenon tetrafluoride monoxenon tetrafluoride xenon fluorate

10 Slide 10 / The correct name for P 2 O 5 is. phosphorus oxide phosphorus pentoxide diphosphorus oxide phosphate diphosphorus pentoxide

11 Slide 11 / The name of l 3 is. boron chloride boron trichloride monoboron chloride trichloro boron monoboron trichloride

12 Slide 12 / The name of the binary compound S 2 is. carbon sulfide monocarbon disulfide carbon disulfide carbon sulfate carbon disulfate

13 Slide 13 / The type of compound that is most likely to contain a covalent bond is. one that is composed of a metal and a nonmetal a solid metal one that is composed of only nonmetals held together by the electrostatic forces between oppositely charged ions There is no general rule to predict covalency in bonds.

14 Slide 14 / There are paired and unpaired electrons in the Lewis symbol for a Nitrogen atom. 4, 2 2, 4 2, 3 4, 3 0, 3

15 Slide 15 / In the Lewis symbol for a sulfur atom, there are paired and unpaired electrons. 2, 2 4, 2 2, 4 0, 6 5, 1

16 Slide 16 / In the Lewis symbol for an Iodine atom, there are paired and unpaired electrons. 4, 2 4,1 2, 5 6, 1 0, 5

17 Slide 17 / There are unpaired electrons in the Lewis symbol for an oxygen atom

18 Slide 18 / The only noble gas without eight valence electrons is. r Ne He Kr ll noble gases have eight valence electrons.

19 Slide 19 / How many single covalent bonds must a silicon atom form to have a complete octet in its valence shell?

20 Slide 20 / How many hydrogen atoms must bond to silicon to give it an octet of valence electrons?

21 Slide 21 / double bond consists of pairs of electrons shared between two atoms

22 Slide 22 / covalent bond between the same two atoms is the longest. single double triple they are all the same length. strong

23 Slide 23 / s the number of covalent bonds between two atoms increases, the distance between the atoms and the strength of the bond between them. increases, increases decreases, decreases increases, decreases decreases, increases is unpredictable

24 Slide 24 / What is the maximum number of double bonds that a hydrogen atom can form?

25 Slide 25 / What is the maximum number of double bonds that a carbon atom can form?

26 Slide 26 / In which of the molecules below is the carboncarbon distance the shortest? H 2 = H 2 H H H 3 H 3 H 2 = = H 2 H 3 - H 2 - H 3

27 Slide 27 / Of the bonds N, = N, N the N bond is. strongest/shortest strongest/longest weakest/shortest weakest/longest intermediate in both strength and length

28 Slide 28 / Of the possible bonds between carbon atoms (single, double, and triple),. a triple bond is longer than a single bond a double bond is stronger than a triple bond a single bond is stronger than a triple bond a double bond is longer than a triple bond a single bond is stronger than a double bond

29 Slide 29 / The ion Il 4 - has valence electrons

30 Slide 30 / The ion NO - has valence electrons

31 Slide 31 / The Lewis structure of sh 3 shows nonbonding electron pair(s) on s This cannot be determined from the data given.

32 Slide 32 / The Lewis structure of PF 3 shows that the central phosphorus atom has nonbonding and bonding electron pairs. 2, 2 1, 3 3, 1 1, 2 3, 3

33 Slide 33 / The Lewis structure of HN (H N) shows that has nonbonding electron pairs., 1 N, 1 H, 1 N, 2, 2

34 Slide 34 / Of the following, cannot accommodate more than an octet of electrons. P s O S I

35 Slide 35 / valid Lewis structure of cannot be drawn without violating the octet rule. NH 3 IF 3 PF 3 Sbl 3-1 NO 3

36 Slide 36 / valid Lewis structure of cannot be drawn without violating the octet rule. 3- PO 4 PF 3 l 4 SeF 4 NF 3

37 Slide 37 / The central atom in does not violate the octet rule. * SF 4 KrF 2 F 4 XeF 4 - Il 4

38 Slide 38 / The central atom in violates the octet rule. NH 3 SeF 2 F 3 sf 3 H 4

39 Slide 39 / valid Lewis structure of cannot be drawn without violating the octet rule. lf 3 Pl 3 SO 3 l 4 O 2

40 Slide 40 / valid Lewis structure of cannot be drawn without violating the octet rule. NI 3 SO 2 Il 5 SiF 4 O 2

41 Slide 41 / valid Lewis structure of cannot be drawn without violating the octet rule. NF 3 eh 2 SO 2 F 4 2- SO 3

42 Slide 42 / The central iodine atom in the Il 4 - ion has non-bonded electron pairs and bonded electron pairs in its valence shell. 2, 2 3, 4 1, 3 3, 2 2, 4

43 Slide 43 / The central iodine atom in IF 5 has nonbonded electron pairs and bonded electron pairs in its valence shell. 1, 5 0, 5 5, 1 4, 1 1, 4

44 Slide 44 / The central Xe atom in the XeF 4 molecule has non-bonded electron pairs and bonded electron pairs in its valence shell. 1, 4 2, 4 4, 0 4, 1 4, 2

45 Slide 45 / Resonance structures differ by. number and placement of electrons number of electrons only placement of atoms only number of atoms only placement of electrons only

46 Slide 46 / How many equivalent resonance forms can be drawn for O 3-2 (carbon is the central atom)?

47 Slide 47 / How many equivalent resonance forms can be drawn for SO 2 without expanding octet on the sulfur atom (sulfur is the central atom)?

48 Slide 48 / How many equivalent resonance structures can be drawn for the molecule of SO 3 without having to violate the octet rule on the sulfur atom?

49 Slide 49 / How many different types of resonance structures can be drawn for the ion SO 3-2 where all atoms satisfy the octet rule?

50 Slide 50 / In the nitrite ion NO 2 -,. both bonds are single bonds both bonds are double bonds one bond is a double bond and the other is a single bond both bonds are the same there are 20 valence electrons

51 Slide 51 / The Lewis structure of the O 3-2 ion is.

52 Slide 52 / To convert from one resonance structure to another,. only atoms can be moved electrons and atoms can both be moved only electrons can be moved neither electrons nor atoms can be moved electrons must be added

53 Slide 53 / For resonance forms of a molecule or ion,. one always corresponds to the observed structure all the resonance structures are observed in various proportions the observed structure is an average of the resonance forms the same atoms need not be bonded to each other in all resonance forms there cannot be more than two resonance structures for a given species

54 Slide 54 / The basis of the VSPR model of molecular bonding is. regions of electron density on an atom will organize themselves so as to maximize s-character regions of electron density in the valence shell of an atom will arrange themselves so as to maximize overlap atomic orbitals of the bonding atoms must overlap for a bond to form electron domains in the valence shell of an atom will arrange themselves so as to minimize repulsions hybrid orbitals will form as necessary to, as closely as possible, achieve spherical symmetry

55 Slide 55 / ccording to VSPR theory, if there are three electron domains in the valence shell of an atom, they will be arranged in a(n) geometry. octahedral linear tetrahedral trigonal planar trigonal bipyramidal

56 Slide 56 / n electron domain could consist of. a. a nonbonding pair of electrons b. a single bond c. a multiple bond a only b only c only a, b, and c b and c

57 Slide 57 / ccording to VSPR theory, if there are five electron domains in the valence shell of an atom, they will be arranged in a(n) geometry. octahedral linear tetrahedral trigonal planar trigonal bipyramidal

58 Slide 58 / ccording to VSPR theory, if there are four electron domains in the valence shell of an atom, they will be arranged in a(n) geometry. octahedral linear tetrahedral trigonal planar trigonal bipyramidal

59 Slide 59 / In the valence shell of an atom there are six electron domains. They will be arranged in a (an) geometry. hexagonal tetrahedral octahedral trigonal bipyramidal see-saw

60 Slide 60 / Using the VSPR model, the electron-domain geometry of the central atom in F 3 is. linear trigonal planar tetrahedral trigonal bipyramidal octahedral

61 Slide 61 / The electron-domain geometry of the central atom in OF 2 is. linear trigonal planar tetrahedral trigonal bipyramidal octahedral

62 Slide 62 / The electron-domain geometry of the central atom in rf 3 is. linear trigonal planar tetrahedral trigonal bipyramidal octahedral

63 Slide 63 / Using the VSPR model, the electron-domain geometry of the central atom in rf 4 - is. linear trigonal planar tetrahedral trigonal bipyramidal octahedral

64 Slide 64 / The electron-domain geometry of is tetrahedral. H 4 PH 3 l 2 r 2 XeF 4 all of the above except XeF 4

65 Slide 65 / The electron-domain geometry and the molecular geometry of a molecule of the general formula n are. never the same always the same sometimes the same not related mirror images of one another

66 Slide 66 / The electron-domain geometry and the molecular geometry of a molecule of the general formula n will always be the same if. there are no lone pairs on the central atom there is more than one central atom n is greater than four n is less than four the octet rule is obeyed

67 Slide 67 / For a molecule with the formula 2 the molecular shape is. linear or bent linear or trigonal planar linear or T-shaped T-shaped trigonal planar

68 Slide 68 / Pl 5 has electron domains and a molecular arrangement. 6, trigonal bipyramidal 6, tetrahedral 5, square pyramidal 5, trigonal bipyramidal 6, seesaw

69 Slide 69 / The electron-domain geometry and molecular geometry of iodine trichloride are and, respectively. trigonal bipyramidal, trigonal planar tetrahedral, trigonal pyramidal trigonal bipyramidal, T-shaped octahedral, trigonal planar T-shaped, trigonal planar

70 Slide 70 / Using the VSPR model, the molecular geometry of the central atom in XeF 2 is. linear trigonal planar tetrahedral bent trigonal pyramidal

71 Slide 71 / Using the VSPR model, the molecular geometry of the central atom in l 3 is. linear trigonal planar tetrahedral bent trigonal pyramidal

72 Slide 72 / Using the VSPR model, the molecular geometry of the central atom in F 4 is. linear trigonal planar tetrahedral bent trigonal pyramidal

73 Slide 73 / Using the VSPR model, the molecular geometry of the central atom in SO 2 is. linear trigonal planar tetrahedral bent trigonal pyramidal

74 Slide 74 / Using the VSPR model, the molecular geometry of the central atom in Nl 3 is. linear trigonal planar tetrahedral bent trigonal pyramidal

75 Slide 75 / Using the VSPR model, the molecular geometry of the central atom in PF 5 is. tetrahedral square planar trigonal bipyramidal seesaw square pyramidal

76 Slide 76 / The molecular geometry of is square planar. l 4 XeF 4 PH 3 XeF 2 Il 3

77 Slide 77 / The molecular geometry of the S 2 molecule is. linear bent tetrahedral trigonal planar T-shaped

78 Slide 78 / The molecular geometry of the SiH 2 l 2 molecule is. trigonal planar tetrahedral trigonal pyramidal octahedral T-shaped

79 Slide 79 / The molecular geometry of the PHl 2 molecule is. bent trigonal planar trigonal pyramidal tetrahedral T-shaped

80 Slide 80 / The molecular geometry of the Hl 3 molecule is. bent trigonal planar trigonal pyramidal tetrahedral T-shaped

81 Slide 81 / The molecular geometry of the SF 2 molecule is. linear bent trigonal planar tetrahedral octahedral

82 Slide 82 / The molecular geometry of the H 3 O + ion is. linear tetrahedral bent trigonal pyramidal octahedral

83 Slide 83 / lf 3 has "T-shaped" geometry. There are non-bonding domains in this molecule

84 Slide 84 / The electron domain and molecular geometry of - ro 2 is. tetrahedral, trigonal planar trigonal planar, trigonal planar trigonal pyramidal, linear tetrahedral, bent trigonal pyramidal, seesaw

85 Slide 85 / The molecular geometry of the ro 3 - ion is. trigonal pyramidal trigonal planar bent tetrahedral T-shaped

86 Slide 86 / The molecular geometry of the left-most carbon atom in the molecule below is trigonal planar trigonal bipyramidal tetrahedral octahedral T-shaped

87 Slide 87 / The molecular geometry of the right-most carbon in the molecule below is. trigonal planar trigonal bipyramidal tetrahedral octahedral T-shaped

88 Slide 88 / What is the molecular geometry of a molecule that has three bonding and two non-bonding domains? T-shaped Tetrahedral See-saw Square pyramidal Trigonal bipyramidal

89 Slide 89 / onsider the following species when answering the following questions: (i) Pl 3 (ii) l 4 (iii) Tel 4 (iv) XeF 4 (v) SF 6 For which of the molecules is the molecular geometry (shape) the same as the VSPR electron domain arrangement (electron domain geometry)? (i) and (ii) (i) and (iii) (ii) and (v) (iv) and (v) (v) only

90 Slide 90 / onsider the following species when answering the following questions: (i) Pl 3 (ii) l 4 (iii) Tel 4 (iv) XeF 4 (v) SF 6 Which of the molecules has a see-saw shape? (i) (ii) (iii) (iv) (v)

91 Slide 91 / The ability of an atom in a molecule to attract electrons is best quantified by the. paramagnetism diamagnetism electronegativity electron change-to-mass ratio first ionization potential

92 Slide 92 / lectronegativity from left to right within a period and from top to bottom within a group. decreases, increases increases, increases increases, decreases stays the same, increases increases, stays the same

93 Slide 93 / Which covalent single bond is most polar? H N H O H O O N

94 Slide 94 / nonpolar bond will form between two atoms of electronegativity. different, opposite identical, different different, different similar, different identical, equal

95 Slide 95 / Of the molecules below, the bond in is the most polar. Hr HI Hl HF H 2

96 Slide 96 / Of the bonds below, is the least polar. Na, S P, S, F Si, l Na, l

97 Slide 97 / Which of the following has the bonds correctly arranged in order of increasing polarity? e F, Mg F, N F, O F O F, N F, e F, Mg F O F, e F, Mg F, N F N F, e F, Mg F, O F Mg F, e F, N F, O F

98 Slide 98 / Which two bonds are most similar in polarity? O F and l F F and l F l l and I r I r and Si l l l and e l

99 Slide 99 / Of the molecules below, only is polar. SbF 5 sh 3 I 2 SF 6 H 4

100 Slide 100 / Of the molecules below, only is nonpolar. O 2 H 2 O NH 3 Hl Tel 2

101 Slide 101 / Of the molecules below, only is polar. l 4 H 4 SeF 4 Sil 4 O 2

102 Slide 102 / Of the molecules below, only is nonpolar. F 3 NF 3 IF 3 Pr 3 rl 3

103 Slide 103 / The molecular geometry of the el 2 molecule is, and this molecule is. linear, nonpolar linear, polar bent, nonpolar bent, polar trigonal planar, polar

104 Slide 104 / The molecular geometry of the PF 3 molecule is, and this molecule is. trigonal planar, polar trigonal planar, nonpolar trigonal pyramidal, polar trigonal pyramidal, nonpolar tetrahedral, unipolar

105 Slide 105 / Of the following molecules, only is polar. el 2 F 3 r 4 SiH 2 l 2 l 2

106 Slide 106 / Of the following molecules, only is polar. l 4 l 3 Nl 3 el 2 l 2

107 Slide 107 / The molecular geometry of the HF 3 molecule is, and the molecule is. trigonal pyramidal, polar tetrahedral, nonpolar seesaw, nonpolar tetrahedral, polar seesaw, polar

108 Slide 108 / The molecular geometry of the l 3 molecule is, and this molecule is. trigonal pyramidal, polar trigonal pyramidal, nonpolar trigonal planar, polar trigonal planar, nonpolar trigonal bipyramidal, polar

109 Slide 109 / 109