1.
Calculate the frequency of visible light having a wavelength of 686.2 nm.
A.
B.
C.
D.
E.
2.
Complete this sentence: Atoms emit visible and ultraviolet light
A.
B.
C.
D.
E.
3.
2.70 × 10–43 J
5.43 × 10–33 J
1.63 × 10–24 J
4.07 × 10–10 J
2.46 × 109 J
The second line of the Balmer series occurs at a wavelength of 486.13 nm. What is the
energy difference between the initial and final levels of the hydrogen atom in this emission
process?
A.
B.
C.
D.
E.
5.
as electrons jump from lower energy levels to higher levels.
as the atoms condense from a gas to a liquid.
as electrons jump from higher energy levels to lower levels.
as they are heated and the solid melts to form a liquid.
as the electrons move about the atom within an orbit.
What is the energy in joules of one photon of microwave radiation with a wavelength 0.122
m?
A.
B.
C.
D.
E.
4.
4.37 × 1014/s
4.37 × 105/s
6.17 × 1014/s
2.29 × 10–15/s
2.29 × 10–6/s
2.44 × 1018 J
4.09 × 10–19 J
4.09 × 10–22 J
4.09 × 10–28 J
1.07 × 10–48 J
Which one of the following sets of quantum numbers is not possible?
n
A.
B.
C.
D.
E.
4
3
3
4
2
l
3
2
0
1
0
ml
-2
-3
0
1
0
ms
+ 1/2
- 1/2
+ 1/2
- 1/2
+ 1/2
Page 1
6.
A possible set of quantum numbers for the last electron added to complete an atom of
germanium in its ground state is
n
A.
B.
C.
D.
E.
7.
4
3
4
3
4
l
0
0
1
1
2
0
+1
-1
+1
+2
D. p orbital.
E. s orbital.
B. 2
C. 3
D. 5
E. 7
How many orbitals are allowed in a subshell if the angular momentum quantum number for
electrons in that subshell is 3?
B. 3
C. 5
D. 7
E. 9
"No two electrons in an atom can have the same four quantum numbers" is a statement
called
A.
B.
C.
D.
E.
11.
C. g orbital.
The number of orbitals in a d subshell is
A. 1
10.
+ 1/2
- 1/2
+ 1/2
- 1/2
- 1/2
B. f orbital.
A. 1
9.
ms
Electrons in an orbital with l = 3 are in a/an
A. d orbital.
8.
ml
the Pauli exclusion principle.
Bohr's equation.
Hund's rule.
De Broglie's relation.
Dalton's atomic theory.
The orbital diagram for a ground state nitrogen atom is
1s
A.
B.
C.
D.
↑↓
↑↓
↑↓
↑↓
2s
↑↓
↑↓
↑
↑↓
2p
↑ ↑ ↑
↑↓ ↑
↑ ↑ ↑
↑↓ ↑ ↑
12. How many unpaired electrons does an atom of sulfur have?
A. 0
13.
B. 1
C. 2
D. 3
E. 4
Which element has the following electron configuration?
[Kr]5s24d105p3
A. Sn
B. Sb
C. Pb
Page 2
D. Bi
E. Te
14.
The ground state electron configuration of Cr, Mo, and W are exceptions to the Aufbau
principle. Which of the following is the electron configuration for Mo?
A.
B.
C.
D.
E.
15.
Which choice lists two elements with electron configurations that are well-known
exceptions to the Aufbau principle?
A.
B.
C.
D.
E.
16.
0, diamagnetic
2, diamagnetic
3, paramagnetic
5, paramagnetic
7, paramagnetic
The electron configuration of a ground state Co atom is
A.
B.
C.
D.
E.
19.
s subshells.
p subshells.
d subshells.
f subshells.
g subshells.
An atom of manganese has ___ unpaired electrons and is _____.
A.
B.
C.
D.
E.
18.
Cu and C
Cr and Cu
Cs and Cl
Rb and Co
Fe and Co
Transition metal elements have atoms or ions with partially filled
A.
B.
C.
D.
E.
17.
[Kr]5s14d5
[Kr]5s24d4
[Xe]6s25d4
[Ar]4s24d4
[Kr]5s24d6
[Ar]4s23d7
1s22s22p63s23d9
[Ne]3s23d7
[Ar]4s13d5
[Ar]4s24d7
Which scientist suggested that matter could behave like waves?
A. Planck
B. Einstein
C. DeBroglie
D. Bohr
E. Heisenberg
Page 3
20. Einstein’s explanation of the photoelectric effect provided evidence that
A. light was particle like
B. light was wave like
C. light could travel through a vacuum
D. light travels faster through a vacuum than other substances
21. Explanation of blackbody radiation is attributed to
A. Planck
B. Einstein
C. DeBroglie
D. Bohr
E. Heisenberg
Problem Section
Write the complete electron configuration of Kr.
Write the complete electron configuration of Se. How many valence electrons does Se have?
Write the electron of mercury using noble gas notation.
Using electrons in boxes (orbital notation), construct the electron configuration of the chromium
(III) ion.
Find the wavelength of a photon emitted from an electronic transition of 3.8 x 10-19 J. What
region of the electromagnetic spectrum does this radiation represent?
Give an example of an electron configuration that is incorrect because it violates Hund’s Rule.
Page 4
Give an example of an electron configuration that is incorrect because it violates the Aufbau
Principle.
Page 5
Answer Key for Test "ch7pretest.tst", 1/10/2005
No. on
Test
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Correct
Answer
A
C
C
B
B
C
B
D
D
A
A
C
B
A
B
C
D
A
19. C
20.A
21.A
Page 6