I
TE$T 2, VERSION A
I< t'l
HEM 1110.24492
ring 2016, Dr. Potts
Put your NAME, TEST VERSION, and AL YOUR ANSWERS on the SCANTRON and submit the scantron
for grad.mg. D o not watt untt·1the end 0 fth e t[~st t 0 trans fler your answers.
VIllA
- IA
2
l
He
H
1.008
3
2
llA
22.99 24.31
nm
lVB
VB
VIB
VIIB
IB
VIllB
llB
30
VIA
8
N
10.81 12.01 14.01
9.01
Mg
VA
7
c
B
Be
12
Na
IVA
6
5
4
li
6.94
11
3
IllA
VIlA
10
9
0
16.00
4.00
F
Ne
19.00 20.18
14
15
16
17
18
13
p
Si
Ar
AI
s
a
26.98 28.09 30.97 32.06 35.45 39.95
32
33
34
35
36
Br
Se
Kr
Ge
As
65.37 69.72 72.59 74.92 78.96 79.90 83.80
4
24
25
26
27
28
29
22
23
1i
v Cr Mn Fe Co Ni Cu
Ca
Sc
39.10 40.08 44.96 47.90 50.94 52.00 54.94 55 . ~ 5 58.93 58.71 63.55
5
40
41
42
43
44
45
46
47
48
49
52
54
37
38
39
50
51
53
y
Zr
Rh
Pd Ag
In · Sn
Te
I
Sr
Nb Mo Tc
RaJ
Cd
Sb
Xe
Rb
85.47 87.62 88.91 91.22 92.91 95.94 [98] 101 1 102.9 106.4 107.9 112.40 114.8 118.7 121.8 127.60 126.90 131.30
19
55
6
20
21
K
Cs
56
Ba
132.9 137.3
71
72
73
31
Zn
Ga
74
Lu
Hf
Ta
175
178.5
181
75
76
77
78
79
80
85
86
81
82
83
84
Re
0!
Ir
Pt
Au
Hg
11
Bi
Po
At
Rn
Pb
183.9 186.2 190 2 192.2 195.1 197 200.59 204.4 207.2 209 f209l f210l f222l
w
87
7
88
103
104
105 106 107 108 109 110 111
112
113
114 115
116
Lr
Rf
Db Sg Bh H!
Mt Ds
Ra
Rg
Uub Uut Uuq Uup Uuh
f223l f2261 f2621 f2671 f268l f2711 f2721 f27 ~1 f2761 f281l f2801 f2851 f2841 f2891 f2881 f2931
Fr
58
59
60
61
62
63
Pr Nd Pm Sm Et
Ce
138.9 140.1 140.9 144.2 fl451 150.4 15
57
La
89
90
91
92
Ac
Th
Pa
u
f2271
232
f2311
238
93
Np
94
Pu
95
Ali~
64
Gd
65
Th
66
67
Dy
68
Ho
Er
69
Tm
157.3 158.9 162.5 164.93 167.3 168.9
96
Cm
97
Bk
98
Cf
f237l f2441 f24 31 f247l f247l f2511
99
70
Yb
173
100 101
102
Fm
Md No
f2521 f2571 f2581 f2591
Es
1 -Test 2, Version A
118
Uuo
f2941
Part I (80pts). 20 multiple-choice questions orth 4 points each. Choose the best answer from the options given,
and record
1.
our mal answer on our scant~'< n.
- - - - - so..me ::tF ele-ct-ronS
Which of these pairs consists of isoelec onic species?
A. Na+ andK+
D.
E.
B. Mn 2+ and AI
K+andCr
C@
2.
Which of these choices is the electron c nfiguration of the iron\III) ion?
A [Ar]4i3cf
, ; [Ar]3Ji
~ [Ar]3rf
3.
A
4.
Cl- and S
Zn2+ and Cu2+
Fe : [A-rJ 4-s z 3
F 3-r-r A.....-\ 1 d
(p
D.
E.
t . Lfi' .J '.J
[Ar]4s 3cf
1
[Ar]4i3d
Iron(III) chloride hexahydrate is used a a coagulant for sewage and industrial wastes. What is its
formula?
(j;) FeCh ·6HzO
D. Fe3Cl(Hz0)6
B. FeCh(Hz0)6
E. Fe(Cl·6Hz0)3
C. Fe3Cl·6H20
Which is the correct formula for coppe (II) phosphate?
A. Cu(P04)z
2·t?0~3~· CuzP04
B. Cu(P03)2
@ Cu3(P04)2
C. CuzP03
fOtj J-
Cu
l
CU;
5.
~.~:
C. Na
6.
{
8.
C
J,~
The formula for sodium sulfide is
A. SeS
B . KzS
C. NaSz
Na+
sz-
D.
E.
D.
®
NtALS
Te
AI
NaS
NazS
The electron configuration of a ground state copper atom is
A. [Ar]4i4ct
D. [Ar]4i4p63d'
10
B. [ArJ4i3ct
c. [Ar]3d9
9.
~ ~:
>
Which of these atoms has the smallest adius?
p
Na
As
A~
7.
r
Which element has the largest first ioni ation energy?
cu. ~[A-rJfs
1
c1
®
[ArJ4/3d10
A red glaze on porcelain can be produ ed by using MnS04. What is its name?
A. manganese sulfate
D. manganese(IV) sulfate
B. manganese disulfate
E. manganese(!) sulfate
manganese(II) sulfate
@
2 -Test 2, Version A
10.
:B
11.
What types of elements undergo covale t bonding?
)...._ a nonmetal and a metal
D.
@) two nonmetals
E.
C. two Group 1A elements
a metal and a noble gas
an actinide
Household sugar, sucrose, has the mole ular formula C12H2z011 · What is the% of carbon in sucrose, by
ll.(tl.ol) =- ILt"4.\'Z \'Ytl.t
l!f'f.\z
1f
/03%
mass?
A 26.732% zz{ 1.o 0s):::1
Wn.l.-( D. 51.445%
xtoo~7z,
c
B. 41.424% 11 (lfo,oo) =- lt-lP ,0 a.v~\,~
E. 42.103%
3Jf'l. 3D
c. 33.333%
3 ~ z_. 0 a mu
%t-:;
zz.
(
3
12.
[
Which element has the following grou
A
Pb
B.
Ge
10
2
-state electron configuration? [Kr]5l4d 5p
D. Te
Sn
(9
C. Sb
13.
C
14.
A
15.
What is the name ofCBr4?
A tetrabromocarbide
B. carbon bromide
@ carbon tetrabromide
D.
E.
bromine tetracarbide
carbon bromine
Tetrasulfur dinitride decomposes explo ively when heated. What is its formula?
S4N2
t
D. S2N4
1
B. S4N
u /V 1E. SzN
@
C.
5
4SNz
1
The compound, P48 10 , is used in the m nufacture of safety matches. What is its name?
A phosphorus sulfide
D . phosphorus sulfide
B. phosphoric sulfide
tetraphosphorus decasulfide
C. phosphorus decasulfide
@
16.
D
18.
The correct name for Ba(OH)z is
A barium hydrate.
B. beryllium hydroxide.
C. boron hydroxide.
How many unpaired electrons does a
cr
i
A
~1___1_
C. 3
19.
C,
3p
Calculate the formula mass of potassi
A 79.41 amu 1jL
3q 1 ) Q
~ 174.04 amu I
.-5lf. q~
t..SJ
158.04amu ~
mn
O
@
E.
barium hydroxide.
barium hydrogen oxide.
ound-state atom of sulfur have?
D. 4
E. 0
permanganate, KMn04.
rn v
D . 149.91 amu
U
E. 127.41 amu
&~ ,O O
tn.V{
~~-+---
}58,()
3 -Test 2, Version A
20.
f3
hers for an electron in a 3d orbital?
D. n = 3, I= 1, m1 = +3
E. n = 3, I = 3, m1 = +2
Which is a correct set of quantum n
A. n = 3, I= 2, m, = 3
@ n = 3,1=2,m1 = - 2
C. n = 3, 1=0, m, = - 1
-3
n
_111..2-z>---1 I o ) \ I 2-
Part 2 (20 pts). Calculations: Clearly (and e ibl show all work on the blank space on the scantron answer
sheet for full credit. Do not wait until the en of the test to transfer our answers.
1. (10 pts) Tin (II) fluoride is added to orne toothpaste to aid in the prevention of tooth decay. How many
ions of fluoride does 7.10 g SnF2 co tain? (MM of SnFz = 156.71 g /mol)
1. JO Snl=2x: ) })10 15Vl Fz_ )( z rnof Fj
)5!P.7-IgSnF2\Mol Shtz__
2. (10 pts) Pheremones are a special
attract the males for mating. One p
amount of this pheromone secreted
cl9H3s0 does this contain? (MM of
0 I 0-12.
). '/,
J
c. H 0
i'j
39
I
X
tn 0
r
X
IP.0227<(0 73 ~ItS
l W!ol F
r-
~ 5j ¥& x) D~~
,·oh
s F
e of compound secreted by the females of many insect species to
eromone has the molecular formula C1 9H3sO. Normally, the
12
y a female insect is about 1.0 x 10- g. How many molecules of
19H3s0= 282.494 g/mol)
H
I
2
0 )C 0:22;r(0
JeaA.lC5 )q '.!8 :::: ; l 0
H
:<8J,t.}Cff4- I'IH3Y()
6. {
e
{no
J rno{ C,qH38 0
(/
v
:z
tt
mcl.eULkSO
C.l<t-H3~
3. (5 pts) Essay: In 4 - 6 sentences, exp ain the difference between core electrons and valence electrons m
atoms and describe the effect that co e electrons have on valence electrons in relation to the nucleus.
PUT ALL AN WERS AND SHOW
ALL WORK OR PART 2 ON THE
BLANK PACE ON THE
SCANTRO . DO NOT WAIT
UNTIL THE ND OF THE TEST
TO TRANSFE YOUR ANSWERS.
I
4 -Test 2, Version A
Test 2 Essay
In multi-electron atoms, the valence electrons are the
outermost electrons and the core electrons are in the
completed shells. Specifically, the core electrons are defined
as those in the highest n-value of the electron configuration
(furthest from the nucleus) and any partially filled d or f
orbitals. The valence electrons are attracted to the positive
charge in the nucleus, but they are shielded by the core
electrons, blocking them from the nucleus. The strength of
the attraction or “pull towards the nucleus” is defined as the
effective nuclear charge.
• Define core electrons
• Define valence electrons
• Explain shielding
• Discuss effective nuclear charge