Test # 2NAME:

shootceaselessUrban and Civil

Nov 16, 2013 (3 years and 11 months ago)

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CHE 170
-
J00
2

Comprehension

Assessment
Test #

2

NAME:

C01
3



NO PHONES, NO BOOKS, NO NOTES at any time during the test period. Write your name above.


9
:30
-
10
:
20

Individual Portion



SAME AS
Fall11, but 20 not 16q (diff IFAT)



You will keep these
questions pages and return your SCAN
-
TRON answer sheet to yo
ur team folder by 10
:
20
.




Record your answers and any thoughts or work on the sheets as you take it individually, as it will be
helpful when you work with the group.



If you finish early,
unfortunately you will just have to hang out for a while. No phones, no books and no
notes may be used, as you still have the team portion of the test to take.



No talking

until the team portion begins.




10
:
20
-
10
:
45

Team Portion



Send one person from you
r team to obtain the IFAT scratch
-
off form from your folder.



After discussing the answer to each question, scratch that answer off. If there is a star, you are correct. If not,
discuss again and continue until you find the correct answer.



You MUST be

sure that everyone in your team understands how to get the answer before leaving.



If you feel like an answer is incorrect or that a question is unclear, fill out an appeal sheet from your folder.

Return these QUESTION SHEETS and the IFAT form to your
team FOLDER at the end.


#
3
1 on the SCAN
-
TRON
for

the
INDIVIDUAL

portion










#
3
1 on the IFAT
for
the
GROUP

portion



3
1
.
[IFAT#
31
]

Calculate the frequency of the red light emitted by a neon sign with a wavelength of 659.9 nm.

A) 2.
998

× 10
8

s
-
1

B)
2.201 × 10
-
6
s
-
1

C)
2.201

× 10
2

s
-
1

D)
4.543
× 10
5

s
-
1

E)
4.543 × 10
14
s
-
1




32.



[
IFAT#
32
]

Which of the following statements is
FALSE
?

A) We can
not

know
both
the exact location and speed of an electron at the same time.

B)
Light is a form of energy with
oscillating electric and magnetic fields that travels through space.

C)
A photon
is a particle of electromagnetic radiation.

D)
An electron has both particle and wave properties.

E)
Light with longer wavelength will have higher frequency.

3
3
.

[IFAT#
33
]

Calculate the
energy of a photon with wavelength 3.28 meters.

A)
6.06 × 10
-
26

Joules


B)
6.52

× 10


25

Joules

C
)
2.
02

× 10
-
19

Joules

D)
2.
17

× 10
-
33

Joules

E)
6.64

× 10
-
19

Joules



34.

[
IFAT#
34
]

Calculate the wavelength of an electron (m
ass

= 9.11 × 10
-
28

g) moving at 3.66 × 10
6

m/s.

A)
5.52 × 10
-
9

m

B) 5.03 × 10
-
10

m

C) 1.81 × 10
-
10

m

D)
1.99 × 10
-
10

m


E) 2.76 × 10
-
9

m



35.

[IFAT#
35
]

In which
subshell

below would an electron (on average) be
closest to

the nucleus?


A)
4p


B)
3d


C)
5g


D)
6
s


E) 4f




36.

[IFAT#
36
]


The electron configuration
for
the barium atom, Ba, is:

A) [
Kr
]
5f
1





D) [
Ra] 6p
1


B) [
Xe
]
6d
2





E)
[Xe] 6s
2


C)
[Ra] 5s
2



37.

[IFAT#
37
]

Determine the energy change associated with the transition from n=2 to n=5 in the
hydrogen atom.

A)
+6.54
× 10
-
19

J

B)
+4.58 × 10
-
19

J


C)
-
6
.5
4

× 10
-
19

J

D)
-
4.58 × 10
-
19

J


E)
-
5.45

× 10
-
19

J


38.

[IFAT#
38
]

Which

of the following best represents the ground
-
state orbital diagram of
Arsenic
,
As
?

A
) ↑↓ ↑↓ ↑↓ ↑↓↑↓ ↑↓ ↑↓

↑↓↑↓ ↑↓ ↑↓↑↓ ↑↓ ↑↓ ↑↓

↑ ↑




1s 2s 2p 3s 3p 4s 3d 4p


B
) ↑↓ ↑↓ ↑↓ ↑↓↑↓ ↑↓ ↑↓ ↑↓↑↓ ↑↓ ↑↓↑
↓ ↑↓ ↑↓ ↑↓

↑↓↑


1s 2s 2p 3s 3p 4s 4d 4p


C
) ↑↓ ↑↓ ↑↓ ↑↓↑↓ ↑↓ ↑↓ ↑↓↑↓ ↑↓ ↑↓↑↓ ↑↓ ↑↓ ↑↓

↑↓




1s 2s 2p 3s 3p

4s
4p






D
) ↑↓ ↑↓ ↑↓ ↑↓↑↓ ↑↓ ↑↓ ↑↓↑↓ ↑↓

↑↓↑↓ ↑↓ ↑↓ ↑↓

↑ ↑




1s 2s 2p 3s 3p 4d

4p


E
) ↑↓ ↑↓ ↑↓ ↑↓↑↓ ↑↓ ↑↓ ↑↓↑↓ ↑↓ ↑↓↑↓ ↑↓ ↑↓ ↑↓

↑↓




1s 2s 2p 3s 3p 4s 3d 4p



39.

[IFAT#
39
]

How many subshells
(or sublevels)
and orbitals are there

in the
third

shell?

A)
5

subshells &
18

orbitals




D) 3 subshells &
9

orbitals


B)
6

subshells &
12

orbitals




E)
2

subshells &
4

orbitals

C)
3 subshells &
18

orbitals



40.


[IFAT#
40
]

Which

set of four quantum numbers
below
could represent the last electron added (using
the Aufbau principle) to the
aluminum

atom
, Al
.

A)
n
= 3,
l

=
2
,
m
l

=
1
,
m
s

= +
2
1



D)
n
=
2
,
l

=
2
,
m
l

= 1,
m
s

=
+
2
1


B)
n
= 4,
l

=
0
,
m
l

= 1,
m
s

=
-

2
1



E)
n
=
3
,
l

=
1
,
m
l

=
-
1,
m
s

=
-

2
1


C)
n
=
4
,
l

= 1,
m
l

= 0,
m
s

= +
2
1

41.

[IFAT#
4
1
]

Give the number of valence electrons for
Germanium
,
Ge

(z=
32
)
.

(Tro Example
8.3)


A)
32



B)
10



C)
12



D)
4


E)
2








42.

[IFAT#
4
2
]

What effective nuclear charge do the valence electrons of
sulfur
,
S
, experience?


A)
-
2



B)
-
6



C
) +
2



D
) +
4



E)
+
6








43.


[IFAT#
4
3
]

Electron affinity
can be described as:



A)

Half the distance between two of the same atoms
that are touching or bonded.

B)

The energy required to remove an electron from the atom.

C)

The energy change when an atom gains an electron.

D)

How far the outer electrons of an atom extend away the nucleus.

E)

The amount of force with which an atom pulls electrons t
o the nucleus.


44.

[IFAT#
4
4
]

Which of the following
does NOT correctly list which atom or ion has the larger radius?






(smaller radius)
<

(larger radius)



(Tro#8.61,8.69,8.71)


A)
Al < In

B)
Mg
(2+)

< Na
(+)

C)
Li
(+)

< Li

D)
F < C

E)
O
(2
-
)

< O



45.

[IFAT#
4
5
]

Which of the following atoms is most likely to have an ionization energy that is larger than
expected and perhaps an exception to the trends?



A)
nitrogen, N




B) boron, B




C) carbon, C




D)

oxygen, O



E)

fluorine, F




46.

[IFAT#
4
6
]

Of the following, which element has
the largest atomic radius
?

S

(z=
16
)


Cl
(z=
17)

Ar
(z=1
8
)



A)

sulfur, S




Se (z=34)




Kr
(z=
36
)

B)
chlorine, Cl

C)
argon, Ar

D)
selenium, Se


E)
krypton, Kr




47.

[IFAT#
47
]

The most probable region that an electron
will be found in the atom is called



A) an orbital.

B) a photon.

C) the atomic radius.

D) the electromagnetic radiation.

E)
the photoelectric effect.

48.

[IFAT#
48
]

Which of the following elements is diamagnetic and will not be attracted by an external
magnet
ic field?



A)
beryllium, z = 4

B)
carbon, z = 6

C)
oxygen, z = 8

D)
fluorine, z = 9

E)

lithium, z = 3


49.

[IFAT#
49
]

Choose the ground state electron configuration for
the Fe
3
+

cation.




(Tro#8.6c)

(
Hint:

determine the configuration for the neutral atom first.)

A)
1s
2
2s
2
2p
6
3s
2
3p
6
4s
2
3d
9

B) 1s
2
2s
2
2p
6
3s
2
3p
6
4s
5

C)
1s
2
2s
2
2p
6
3s
2
3p
6
3d
5

D)
1s
2
2s
2
2p
6
3s
2
3p
6
4p
5

E)
1s
2
2s
2
2p
6
3s
2
3p
6
4s
2
4
d
6




50.

[IFAT#
50
]

Which of the following best explain
s

why neon has a larger

ionization energy than chlorine?





A)

Neon has a larger effective nuclear charge.




B)
The electrons in neon are closer to the nucleus.

C)
Neon is extra stable because all of it’s occupied electron subshells are full.

D)
Only B and C
are reasons

why Ne has larger ionization energy than Cl.

E)
A, B and C above
are all reasons

why Ne has larger ionization energy than Cl.



EQUATIONS:


ν = c / λ




E = h ν




E = h c / λ


λ = h / mv




Δx m Δv ≥ h / 4π


E
n

=
-

2.18x10
-
18
J (1/n
2
)



ΔE =
-

2.18x10
-
18
J (1/n
f
2


1/n
i
2
)


n = 1, 2, 3,…


l = 0, 1,…, (n
-
1)


m
l

=
-
l,…, +l

m
s

= +/
-

1/2




CONVERSIONS & CONSTANTS:


pico = 10
-
12


nano = 10
-
9

micro = 10
-
6

mega = 10
6


1 mi = 1609 m


1 hr = 60 min


1 min = 60 sec


c = 2.998x10
8

m/s



h = 6.626x10
-
34

J s


1 mole =
6.022x10
23



1 J = 1 kg m
2
/s
2