Unit 9 Review
Ionic and Covalent Bonding
1.
Which of the follow ing is a covalent com p ou nd com p osed of nonp olar covalent bond s?
a. N aF
b. H 2O
c. H 2
d . CF4
e. CH 4
2.
Which of the follow ing bond s is the m ost p olar?
a. C -- C
b. C -- F
c. C -- O
d . C -- N
e. F – F
3.
Which of the follow ing occu r w hen tw o atom s of d ifferent elem ents bond together? Bu bble in all
that ap p ly.
a. A com p ou nd is form ed .
b. N ew elem ents w ith d ifferent nu m bers of p rotons are form ed .
c. The ind ivid u al atom s becom e m ore stable.
d . The p otential energy of the atom s is low ered .
e. Protons and neu trons are re-arranged .
4.
Which one of the follow ing fam ilies of elem ents are characterized by atom s w hich alread y have a
fu ll octet of ou ter electrons?
a. alkali m etals
b. noble gases
c. alkali earth m etals
d . halogens
e. transition m etals
5.
Most m ain-block elem ents becom e m ore stable by _____.
a. losing all their electrons
b. gaining m ore electrons
c. gaining m ore p rotons
d . achieving an octet of ou ter shell electrons
e. filling their d orbitals w ith electrons
ab. em p tying their d orbitals of electrons
6.
Most elem ents becom e m ore stable by achieving an electron configu ration w hich is sim ilar to _____.
a. som e other elem ent
b. a noble gas
c. a transition m etal
d . a halogen
e. a non-rad ioactive elem ent.
7.
Consid er the elem ent w ith the electron configu ration show n at the right.
This elem ent w ou ld be exp ected to
a. gain 1 m ore electron
b. gain 2 m ore electrons
c. gain 5 m ore electrons
d . gain 7 m ore electrons
e. lose 1 electron
ab. lose 2 electrons
ac. lose 5 electrons
ad . lose 7 electrons
ae. lose 9 electrons
bc. ...nonsense! Elem ents are not that p red ictable.
8.
Which of the follow ing atom s w ou ld be exp ected to be stable? Bu bble in all that ap p ly .
9.
The elem ent rep resented by the orbital d iagram show n at the
right w ou ld be exp ected to _____ in ord er to achieve a stable
octet.
a. gain 1 m ore electron
b. gain 3 m ore electrons
c. gain 5 m ore electrons
d . gain 8 m ore electrons
e. lose 1 electron
ab. lose 5 electrons
ac. lose 7 electrons
ad . lose 8 electrons
ae. ... nonsense! It alread y has a stable octet.
10.
If a neu tral atom gains 2 electrons, then it acqu ires a _____.
a. +2 charge
b. -2 charge
c. … nonsense! N ot enou gh inform ation to tell
11.
If a neu tral atom loses three electrons, then it acqu ires a _____.
a. +3 charge
b. -3 charge
c. … nonsense! N ot enou gh inform ation to tell
12.
The orbital d iagram of a neu tral atom is show n at the right.
This atom w ill either gain or lose electrons in ord er to becom e
stable. As su ch it w ou ld becom e an ion. This atom w ou ld be
exp ected to becom e a _____.
a. +2 ion
b. +3 ion
c. +5 ion
d . +7 ion
e. -1 ion
ab. -3 ion
ac. -5 ion
13.
If a p article is an ion, then one can be certain that _____.
a. the nu m ber of p rotons is greater than the nu m ber of neu trons
b. the nu m ber of electrons is greater than the nu m ber of neu trons
c. the nu m ber of p rotons is greater than the nu m ber of electrons
d . the nu m ber of electrons is greater than the nu m ber of p rotons
e. the nu m ber of p rotons is not equ al to the nu m ber of neu trons
ab. the nu m ber of electrons is not equ al to the nu m ber of neu trons
ac. the nu m ber of p rotons is not equ al to the nu m ber of electrons
14.
Based on the orbital shell d iagram show n at the right, one w ou ld
reason that this p article w ou ld _______ in ord er to becom e stable.
a. gain 1 electron
b. gain 2 electrons
c. gain 7 electrons
d . gain 8 electrons
e. lose 1 electron
ab. lose 2 electrons
ac. lose 7 electrons
ad . lose 8 electrons
ae. ... nonsense! This p article is alread y stable.
15.
There is a w hole category of elem ents w hich are characterized by atom s w hich typ ically lose 1
electron in ord er to becom e stable. Id entify the category.
a. H alogens
b. Transition m etals c. Alkaline earth m etals
d . N oble Gases
e. Alkali m etals
ab. N one of these.
16.
There is a w hole category of elem ents w hich are characterized by atom s w hich typ ically gain 2
electrons in ord er to becom e stable. Id entify the category .
a. H alogens
b. Transition m etals c. Alkaline earth m etals
d . N oble Gases
e. Alkali m etals
ab. N one of these.
17.
There is a w hole category of elem ents w hich are characterized by atom s w hich alw ays form stable
+2 ions. Id entify the category.
a. H alogens
b. Transition m etals c. Alkaline earth m etals
d . N oble Gases
e. Alkali m etals
ab. N one of these.
18.
There is a w hole category of elem ents w hich are characterized by atom s w hich alw ays form stable -1
ions. Id entify the category.
a. H alogens
b. Transition m etals c. Alkaline earth m etals
d . N oble Gases
e. Alkali m etals
ab. N one of these.
19.
Iod ine (I) atom s w ou ld be likely to ______ (gain, lose) ____ electrons and becom e a ______ ion.
a. gain, 1, +1
b. gain, 1, -1
c. gain, 2, +2
d . gain, 2, -2
e. lose, 1, +1
ab. lose, 1, -1
ac. lose, 2, +2
ad . lose, 2, -2
ae. none of the above
20.
Based on their electron arrangem ents, w hich of the follow ing p articles cou ld be exp ected to be
stable? Bu bble in all that ap p ly.
21.
Based on their electron arrangem ents, w hich of the follow ing p articles cou ld be exp ected to be
stable? Bu bble in all that ap p ly.
+
_
22a. F ion
b. Cl ion
c. S ion
d . Al atom
e. O ion
22.
Based on their electron arrangem ents, w hich of the follow in g p articles cou ld be exp ected to be
stable? Bu bble in all that ap p ly.
23.
When the elem ent Li and the elem ent O form an ionic bond , _____.
a. one Li atom transfers 1 electron to one O atom
b. one O atom transfers 1 electron to one Li atom
c. one O atom transfers 2 electrons to one Li atom
d . one Li atom transfers 2 electrons to one O atom
e. each of tw o Li atom s transfers 1 electron to one O atom
ab. each of tw o O atom s transfers 1 electron to one Li atom
ac. one O atom transfers 2 electrons, one to each of tw o Li atom s
ad . one Li atom transfers 2 electrons, one to each of tw o O atom s
24.
Atom s of elem ent A w ant to lose 1 electron. Atom s of elem ent B w ant to gain 2 electrons. If these
tw o elem ents w ere to form an ionic com p ou nd , then there w ou ld be _________ in each form u la u nit.
a. one atom of A and one atom of B
b. one atom of A and tw o atom s of B
c. tw o atom s of A and one atom of B
d . tw o atom s of A and tw o atom s of B
e. none of the above
25.
The m ain d istinction betw een an ionic and a covalent bond is that ionic bond s involve
_____________ and covalent bond s involve ___________.
a. electron sharing (ionic), electron transfer (covalent)
b. electron transfer (ionic), electron sharing (covalent)
c. form ation of a com p ou nd (ionic), d estru ction of a com p ou nd (covalent)
d . form ation of a com p ou nd (ionic), d estru ction of a com p ou nd (covalent)
e. none of these
ab. More than tw o of the above are tru e.
26.
In a covalent bond betw een tw o atom s, the force w hich hold s the bond ed atom s togethe r is the
resu lt of _____.
a. the p rotons in the nu cleu s of one atom attracting the p rotons of the other atom
b. the p rotons in the nu cleu s of one atom rep elling the p rotons of the other atom
c. the electrons in the ou ter shell of one atom attracting the electrons of the other atom
d . the electrons in the ou ter shell of one atom rep elling the electrons of the other atom
e. the p rotons in the nu cleu s of one atom attracting the electrons of the other atom
ab. the p rotons in the nu cleu s of one atom rep elling the electrons of the other atom
ac. the cation and the anion attracting each other
27.
Consid er the d iagram below w hen answ ering the follow ing qu estion.
The tw o atom s are m ost stable w hen the d istance betw een them corresp ond s to p oint _____ on t he
grap h.
a. A
b. B
c. C
d. D
e. A and D
f. none of these
28.
Consid er the d iagram below w hen answ ering the follow ing qu estion.
The fact that the energy at p oint B on the grap h is low can be best attribu ted to the id ea that
___________ betw een the tw o atom s are "intense" (strong) at this d istance.
a. electron-electron rep u lsions
b. electron-electron attractions
c. p roton-p roton rep u lsions
d . p roton-p roton attractions
e. electron-p roton rep u lsions
ab. electron-p roton attractions
Bond Polarity
Table of Electronegativities
H
2.1
Li
1.0
Na
0.9
K
0.8
Rb
0.8
Cs
0.7
Fr
0.7
29.
Be
1.5
Mg
1.2
Ca
1.0
Sr
1.0
Ba
0.9
Ra
0.9
Sc
1.3
Y
1.2
La
1.0
Ac
1.1
Ti
1.5
Zr
1.4
Hf
1.3
Th
1.3
V
1.6
Nb
1.6
Ta
1.5
Pa
1.4
Cr
1.6
Mo
1.8
W
1.7
U
1.4
Mn
1.5
Tc
1.9
Re
1.9
Np
1.4
Fe
1.8
Ru 2
.2
Os
2.2
Co
1.9
Rh
2.2
Ir
2.2
Ni
1.9
Pd
2.2
Pt
2.2
Cu
1.9
Ag
1.9
Au
2.4
Zn
1.6
Cd
1.7
Hg
1.9
B
2.0
Al
1.5
Ga
1.6
In
1.7
Tl
1.8
C
2.5
Si
1.8
Ge
1.8
Sn
1.8
Pb
1.9
N
3.0
P
2.1
As
2.0
Sb
1.9
Bi
1.9
O
3.5
S
2.5
Se
2.4
Te
2.1
Po
2.0
F
4.0
Cl
3.0
Br
2.8
I
2.5
At
2.2
A dipole moment vector is often u sed to ind icate the centers of p ositive and negative p artial charge
w ithin a p olar covalent bond . Consid er the d ip ole m om ent vectors sh ow n below . Which d iagram s
correctly ind icate the d irection of the d ip ole vector? Bu bble in all that ap p ly.
Se
Br
D iagram A
S
F
D iagram B
Cl
I
D iagram C
H
N
D iagram D
30.
The greater the electronegativity of an elem ent, the m ore likely that atom s of that elem ent w ill _____.
a. attract electrons in a bond tow ard s itself. b. be an electrical cond u ctor
c. give its electrons aw ay to form a bond .
d . form nonp olar covalent bond s
31.
Use the table of electronegativities to id entify the m ost p olar bond :
a. B-O
b. H -B
c. H -C
d . S-P
Use the table of electronegativities to id entify the least p olar bond :
a. B-P
b. P-Cl
c. N -O
d . F-O
32.
33.
The greater the d ifference in electronegativity betw een tw o bond ed atom s, the _____.
a. m ore evenly d istribu ted w hich electrons w ill be in the bond
b. m ore likely the electr ons w ill be equ ally shared
c. m ore p olar that the bond is
34.
An elem ent w ith a high electronegativity _____.
a. bond s w ith m any atom s
b. bond s w ith very few atom s
c. has a high attraction for electrons
d . has a low attraction for electrons
e. is very stable
ab. is very u nstable
35.
A covalent bond can be p olar covalent or nonp olar covalent. The d istinction has to d o w ith _____.
a. the strength of the bond w hich resu lts
b. the likelihood that the bond w ill break
c. the tend ency of the bond to store energy
d . the d egree to w hich bond ed atom s share electrons equ ally
36.
Use an electronegativity chart to classify the follow ing bond as being ionic, p olar covalent, or
nonp olar covalent. The bond form ed betw een chlorine (Cl) and cesiu m (Cs) is _____.
a. ionic.
b. p olar covalent.
c. nonp olar covalent.
Lew is Electron D ot Structure
3-
37. H ow m any electrons are available for bond ing in p hosp hate ion, PO 4 ?
a. 30
b. 31
c. 32
d . 36
38.
e. 50
Which of the follow ing is not a correct Lew is stru ctu re?
-
O N O
O N O
N O
N N O
(NO2)
(NO2-)
(NO)
(N2O)
-
a. N O 2
b. N O 2
e. All of the above are correct stru ctu res.
c. N O
d . N 2O
39. H ow m any p ossible resonance stru ctu res exist for su lfu r trioxid e?
a. 3
b. 4
c. 5
d. 6
40. Which of the follow ing Lew is stru ctu res are resonance stru ctu res of thiocyanate ion?
-
42.
-
-
-
S C N
S C N
S C N
S C N
S C N
(1)
(2)
(3)
(4)
(5)
a. (1) and (3)
d . (1), (3), and (4)
41.
-
b. (2), (3), and (4)
e. (2), (4), and (5)
c. (1), (3), and (5)
A su lfu r (S) atom has ______ valence electron(s).
a. 2
b. 4
c. 6
e. ap p roxim ately 32
ab. none of these.
d. 8
The Lew is stru ctu re show n at the right for the given com p ou nd is incorrectly
d raw n. Which of the follow ing statem ents d escribes som ething that is
w rong w ith the stru ctu re? (N OTE: 'v.e.' stand s for valence electrons).
Bu bble in all that ap p ly.
a. The d iagram show s too few v.e.
b. The d iagram show s too m any v.e.
c. There are too m any v.e. arou nd one or m or of the O atom s.
d . A stru ctu re can be d raw n w ith only 8 v.e. arou nd the S atom .
e. The central atom w ou ld not be S.
ab. N onsense! The d iagram is correctly d raw n.
43.
44.
The Lew is stru ctu re show n at the right for the given com p ou nd is incorrectly
d raw n. Which of the follow ing statem ents d escribes som ething that is w rong
w ith the stru ctu re? (N OTE: 'v.e.' stand s for valence electrons). Bu bble in all
that ap p ly.
a. The d iagram show s too few v.e.
b. The d iagram show s too m any v.e.
c. There are too m any v.e. arou nd the left O atom .
d . There are too few v.e. arou nd the right O atom .
e. There are too m any v.e. arou nd the C atom .
ab. N onsense! The d iagram is correctly d raw n.
The Lew is stru ctu re show n at the right for the given com p ou nd is incorrectly
d raw n. Which of the follow ing statem ents d escribes som ething that is
w rong w ith the stru ctu re? (N OTE: 'v.e.' stand s for valence electrons).
Bu bble in all that ap p ly.
a. The d iagram show s too few v.e.
b. The d iagram show s too m any v.e.
c. There are too few v.e. arou nd one or m ore of the O atom s.
c. There are too m any v.e. arou nd one or m ore of the O atom s.
e. There are too m any v.e. arou nd the N atom .
ab. N onsense! The d iagram is correctly d raw n.
VSEPR, Molecular Shape, Molecular Polarity and Hybridization
45. Which of the follow ing sp ecies has a Lew is stru ctu re w ith a m olecu lar geom etry sim ilar to SO 3?
22a. N H 3
b. ICl3
c. CO 3
d . SO 3
e. PCl3
46. Use VSEPR theory to p red ict the m olecu lar geom etry of ICl 3.
a. triangu lar p lanar
b. octahed ral
c. triangu lar p yram id al
d . t-shap ed
e. triangu lar bip yram id al
+
3-
47. Which of the follow ing sp ecies have the sam e m olecu lar geom etry: XeF 4, ClF4 , SF4, PO 4 ?
+
+
3a. XeF4 and SF4
b. ClF4 , and SF4
c. ClF4 and PO 4
+
3d . XeF4 and ClF4
e. XeF4, SF4, and PO 4
48. What is the hybrid ization of the central atom in XeF 4?
2
3
a. sp
b. sp
c. sp
3
3
d . sp d
e. sp d
2
49. What hybrid ization change d oes the carbon atom u nd ergo in the com bu stion of m ethane?
CH 4(g) + 2O 2(g)
a. sp
sp
2
b. sp
2
sp
3
CO 2(g) + 2H 2O(g)
c. sp
3
sp
d . sp
2
sp
50. The shap e of the CH 4 m olecu le is m ost sim ilar to the shap e of a m olecu le of _____.
a. H 2O
b. N 2H 4
c. SiH 4
d . C 2H 4
e. none
51.
Which one of the follow ing is N OT a tru e statem ent abou t VSEPR theory?
a. Pairs of electrons w ithin a m olecu le w ill orient them selves as far ap art as p ossible.
b. The electron p air geom etry of a m olecu le is d ep end ent u p on the nu m ber of electron clou d s
su rrou nd ing the central atom .
c. Pairs of electrons w ill sp atially orient them selves in su ch a w ay as to red u ce the total am ou nt of
rep u lsions.
d . Electron p air geom etry is based on the location of electron clou d s w hereas m olecu lar shap e is
based on the location of atom s in the m olecu le.
e. The electron p air geom etry and the m olecu lar shap e of a m olecu le are alw ays the sam e.
52.
TRUE
or
FALSE:
If tw o m olecu les to have the sam e nu m ber of atom s and sim ilar form u la
(e.g., carbon d ioxid e - CS2 - and su lfu r d ioxid e - SO 2 -m olecu les each have 3
atom s), then they w ill have the sam e m olecu lar shap es.
a. TRUE
53.
TRUE
b. FALSE
or
FALSE?
Molecu lar shap e d escribes the location and geom etric arrangem ent of the
electron clou d s su rrou nd ing the the centr al atom of a m olecu le.
a. TRUE
b. FALSE
54.
Given the Lew is electron d ot stru ctu re show n at the right, one w ou ld exp ect
the electron p air geom etry for this m olecu le to be _____.
a. bent
b. linear
c. trigonal p yram id al
d . tetrahed ral
e. trigonal p lanar
ab. … nonsense! N one of these.
55.
Given the Lew is electron d ot stru ctu re show n at the right, one w ou ld exp ect
the m olecu lar geom etry for this m olecu le to be _____.
a. bent
b. linear
c. trigonal p yram id al
d . tetrahed ral
e. trigonal p lanar
ab. … nonsense! N one of these.
56.
Consid er a m olecu le w hose central atom contains fou r single bond s and no u nshared electron p airs.
Accord ing to hybrid ized bond ing theory, the central atom w ou ld assu m e a _____ hybrid ization.
2
3
3
3 2
a. sp
b. sp
c. sp
d . sp d
e. sp d
57.
Consid er a m olecu le w hose central atom contains tw o single bond s and tw o u nshared electron p airs.
Accord ing to hybrid ized bond ing theory, the central atom w ou ld assu m e a _____ hybrid ization.
2
3
3
3 2
a. sp
b. sp
c. sp
d . sp d
e. sp d
58.
Consid er a m olecu le w hose central atom contains tw o single bond s, one d ou ble bond and no
u nshared electron p airs. Accord ing to hybrid ized bond ing theory, the central atom w ou ld assu m e a
_____ hybrid ization.
2
3
3
3 2
a. sp
b. sp
c. sp
d . sp d
e. sp d
59.
AXE notation is often u sed to d escribe the arrangem ent of electrons abou t the central atom in a
m olecu le. Accord ing to the notation - frequ ently abbreviated as AXiEj - i rep resents the nu m ber of
atom s bond ed to the central atom and j rep resents the nu m ber of u nshared electron p airs on the
central atom . A m olecu le w hose central atom is AX3 w ill have a m olecu lar geom etry that is _____.
a. trigonal p lanar
b. T-shap ed
c. bent
d . trigonal bip yram id al
e. linear
ab. tetrahed ral
ac. seesaw
ad . trigonal p yram id al
ae. squ are p lanar
bc. octahed ral
bd . squ are p yram id al
60.
AXE notation is often u sed to d escribe the arrangem ent of electrons abou t the central atom in a
m olecu le. Accord ing to the notation - frequ ently abbreviated as AXiEj - i rep resents the nu m ber of
atom s bond ed to the central atom and j rep resents the nu m ber of u nshared electron p airs on the
central atom . A m olecu le w hose central atom is AX4E1 w ill have a m olecu lar geom etry that is _____.
a. trigonal p lanar
b. T-shap ed
c. bent
d . trigonal bip yram id al
e. linear
ab. tetrahed ral
ac. seesaw
ad . trigonal p yram id al
ae. squ are p lanar
bc. octahed ral
bd . squ are p yram id al
For Questions #61 - #68: Com p lete the table for the follow ing com p ou nd s. You r Lew is stru ctu re m u st be
clear. If necessary, red raw the d iagram at the bottom of the p age or on the back.
CO 2
61.
linear
see saw
ClO 3-
62.
# valence e - = ____________
# valence e - = ____________
Lew is Electron D ot Structure
Lew is Electron D ot Structure
Molecular Geometry:
Molecular Geometry:
(Clearly circle)
(Clearly circle)
tetrahed ral
T-shap ed
trigonal p yram id al
trigonal bip yram id al
trigonal p lanar
bent
linear
octahed ral
see saw
squ are p yram id al
tetrahed ral
T-shap ed
trigonal p yram id al
squ are p lanar
trigonal bip yram id al
squ are p yram id al
squ are p lanar
This molecule is …
(Clearly circle)
N on-Polar
Polar
N on-Polar
The hybridization of the central atom is …
(Clearly circle)
2
sp
4
octahed ral
(Clearly circle)
The hybridization of the central atom is …
sp
bent
This molecule is …
Polar
sp
trigonal p lanar
2
sp
sp
2
(Clearly circle)
2
sp
3
sp d
sp d
3
3
2
sp
2
sp
sp
4
2
sp
sp
2
2
sp
3
sp d
sp d
3
3
2
CS 2
63.
linear
see saw
SOCl 2 (S is central atom)
64.
# valence e - = ____________
# valence e - = ____________
Lew is Electron D ot Structure
Lew is Electron D ot Structure
Molecular Geometry:
Molecular Geometry:
(Clearly circle)
(Clearly circle)
tetrahed ral
T-shap ed
trigonal p yram id al
trigonal bip yram id al
trigonal p lanar
bent
linear
octahed ral
see saw
squ are p yram id al
tetrahed ral
T-shap ed
trigonal p yram id al
squ are p lanar
trigonal bip yram id al
squ are p yram id al
squ are p lanar
This molecule is …
(Clearly circle)
N on-Polar
Polar
N on-Polar
The hybridization of the central atom is …
(Clearly circle)
2
sp
4
octahed ral
(Clearly circle)
The hybridization of the central atom is …
sp
bent
This molecule is …
Polar
sp
trigonal p lanar
2
sp
sp
2
(Clearly circle)
2
sp
3
sp d
sp d
3
3
2
sp
2
sp
sp
4
2
sp
sp
2
2
sp
3
sp d
sp d
3
3
2
XeF4
65.
linear
see saw
XeO 4
66.
# valence e - = ____________
# valence e - = ____________
Lew is Electron D ot Structure
Lew is Electron D ot Structure
Molecular Geometry:
Molecular Geometry:
(Clearly circle)
(Clearly circle)
tetrahed ral
T-shap ed
trigonal p yram id al
trigonal bip yram id al
trigonal p lanar
bent
linear
octahed ral
see saw
squ are p yram id al
tetrahed ral
T-shap ed
trigonal p yram id al
squ are p lanar
trigonal bip yram id al
trigonal p lanar
bent
octahed ral
squ are p yram id al
squ are p lanar
This molecule is …
This molecule is …
(Clearly circle)
(Clearly circle)
Polar
N on-Polar
Polar
N on-Polar
The hybridization of the central atom is …
The hybridization of the central atom is …
(Clearly circle)
(Clearly circle)
2
sp
sp
sp
4
2
sp
sp
2
2
sp
3
sp d
sp d
3
3
2
sp
2
sp
sp
4
2
sp
sp
2
2
sp
3
sp d
sp d
3
3
2
AsF5
67.
linear
see saw
XeF6
68.
# valence e - = ____________
# valence e - = ____________
Lew is Electron D ot Structure
Lew is Electron D ot Structure
Molecular Geometry:
Molecular Geometry:
(Clearly circle)
(Clearly circle)
tetrahed ral
T-shap ed
trigonal p yram id al
trigonal bip yram id al
trigonal p lanar
bent
linear
octahed ral
see saw
squ are p yram id al
tetrahed ral
T-shap ed
trigonal p yram id al
squ are p lanar
trigonal bip yram id al
trigonal p lanar
bent
octahed ral
squ are p yram id al
squ are p lanar
This molecule is …
This molecule is …
(Clearly circle)
(Clearly circle)
Polar
N on-Polar
Polar
N on-Polar
The hybridization of the central atom is …
The hybridization of the central atom is …
(Clearly circle)
(Clearly circle)
2
sp
sp
sp
4
2
sp
sp
2
2
sp
3
sp d
sp d
3
3
2
sp
2
sp
sp
4
2
sp
sp
2
2
sp
3
sp d
sp d
3
3
2
Intermolecular Forces and Polarity
69. Which of the follow ing statem ents concerning hyd rogen bond ing is N OT correct?
a. Water is less d ense in the solid p hase than the liqu id p hase d u e to hyd rogen bond ing.
b. H yd rogen bond ing occu rs in m olecu les w ith N -H , O-H , and F-H bond s.
c. H yd rogen bond ing in w ater resu lts in low er than exp ected m elting p oints.
d . The u nu su ally high boiling p oints of w ater, am m onia, and hyd rogen flu orid e are the resu lt of
hyd rogen bond ing.
e. H yd rogen bond ing is an u nu su ally strong d ip ole force.
70. What interm olecu lar forces are p resent in solid CO 2?
a. d isp ersion forces
b. d ip ole forces
c. hyd rogen bond ing
d . answ ers a and b
e. answ ers a, b, and c
71. Arrange N H 3, CH 4, and PH 3 in ord er from low est to highest boiling p oints.
a. CH 4 < PH 3 < N H 3
b. CH 4 < N H 3 < PH 3
c. PH 3 < N H 3 < CH 4
d . N H 3 < CH 4 < PH 3
e. PH 3 < CH 4 < N H 3
72. Which of the follow ing su bstances w ill exhibit d ip ole forces?
a. SO 3
b. H 2S
c. CH 4
d . SF6
e. N 2
73.
Which one of the follow ing p rop erties w ou ld not be affected by the strength of the interm olecu lar
forces betw een p articles.
a. boiling p oint
b. vap or p ressu re
c. m ass
d . m elting p oint
e. viscosity
74.
What typ es of interm olecu lar forces w ou ld exist betw een m olecu les of m ethanol (CH 3OH )?
a. Lond on d isp ersion forces
b. H yd rogen-bond ing forces
c. Dip ole-d ip ole forces
75.
Which of the follow ing su bstances are cap able of u nd ergoing hyd rogen bond ing? Bu bble in all that
ap p ly.
a. H 2
b. H F
c. N aF
d . H 2O
e. CH 4
76.
Which of the follow ing d escrip tors ap p rop riately characterize Lond on d isp ersion forces? Bu bble in
all that ap p ly.
a. They are tem p orary, short-lived forces.
b. They resu lt w hen a tem p orary d ip ole ind u ces a d ip ole in a neighboring p articl e.
c. They are consid erably w eaker than hyd rogen bond ing bu t stronger than d ip ole -d ip ole forces.
d . They are p erm anent forces w hich p ersist as long as the sam p le is not d istu rbed .
e. They are forces acting betw een op p ositely charged ions.
77.
Pred ict w hich com p ou nd below w ou ld have the strongest interm olecu lar forces.
a. CH 3—CH 2—PH 2
b. CH 3—CH 2—H
c. CH 3—CH 2—S—H
d . CH 3—CH 2—Se—H
e. CH 3—CH 2—O—H