1.
Which form of electromagnetic radiation has the longest wavelengths?
a)
gamma rays
b)
microwaves
c)
radio waves
d)
infrared radiation
e)
x-rays
Ans: c
Algorithm: No
Chapter/Section: 7.1
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: light
Keyword 5: electromagnetic radiation
2.
Which of the following frequencies corresponds to light with the longest wavelength?
a)
3.00  1013 s–1
b)
4.12  105 s–1
c)
8.50  1020 s–1
d)
9.12  1012 s–1
e)
3.20  109 s–1
Ans: b
Algorithm: No
Chapter/Section: 7.1
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: light
Keyword 5: electromagnetic radiation
3.
Which of the following are incorrectly paired?
a)
wavelength – 
b)
frequency – 
c)
speed of light – c
d)
hertz – s–1
e)
x-rays – shortest wavelength
Ans: e
Algorithm: No
Chapter/Section: 7.1
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: light
Keyword 5: electromagnetic radiation
4.
When a strontium salt is ignited, it burns with a red flame. The frequency of the light given off by this flame is
greater than
a)
yellow light
b)
infrared light
c)
ultraviolet light
d)
radio waves
e)
x-rays
Ans: b
Algorithm: No
Chapter/Section: 7.1
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: light
Keyword 5: electromagnetic radiation
5.
Green light can have a wavelength of 512 nm. The energy of a photon of this light is
a)
1.02  10–31 J
b)
5.12  10–7 J
c)
3.88  10–19 J
d)
5.86  1014 J
e)
2.58  1018 J
Ans: c
Algorithm: Yes
Chapter/Section: 7.2
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: light
Keyword 5: electromagnetic radiation
6.
Consider an atom traveling at 1% of the speed of light. The de Broglie wavelength is found to be 3.32 
10–3 pm. Which element is this?
a)
He
b)
Ca
c)
Hg
d)
Be
e)
P
Ans: b
Algorithm: Yes
Chapter/Section: 7.2
Difficulty: Moderate
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: quantum mechanics
Keyword 5: de Broglie relation
7.
T F Diffraction results when light is scattered from a regular array of points or lines.
Ans: True
Algorithm: No
Chapter/Section: 7.2
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: light
8.
T F All matter exhibits either particulate or wave properties exclusively.
Ans: False
Algorithm: No
Chapter/Section: 7.2
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: light
9.
The four lines observed in the visible emission spectrum of hydrogen tell us that:
a)
The hydrogen molecules they came from have the formula H4.
b)
We could observe more lines if we had a stronger prism.
c)
There are four electrons in an excited hydrogen atom.
d)
Only certain energies are allowed for the electron in a hydrogen atom.
e)
The spectrum is continuous.
Ans: d
Algorithm: No
Chapter/Section: 7.3
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: light
Keyword 5: Bohr theory
Keyword 6: atomic line spectra
Use the following to answer questions 10-11:
Consider the following portion of the energy-level diagram for hydrogen:
10.
n=4
–0.1361  10–18 J
n=3
–0.2420  10–18 J
n=2
–0.5445  10–18 J
n=1
–2.178  10–18 J
For which of the following transitions does the light emitted have the longest wavelength?
a)
n = 4 to n = 3
b)
n = 4 to n = 2
c)
n = 4 to n = 1
d)
n = 3 to n = 2
e)
n = 2 to n = 1
Ans: a
Algorithm: No
Chapter/Section: 7.4
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: light
Keyword 5: Bohr theory
Keyword 6: atomic line spectra
11.
In the hydrogen spectrum, what is the wavelength of light associated with the n = 4 to n = 1 electron
transition?
a)
5.96  10–25 nm
b)
1.46  103 nm
c)
1.03  107 cm
d)
2.04  10–18 m
e)
9.73  10–8 m
Ans: e
Algorithm: Yes
Chapter/Section: 7.4
Difficulty: Moderate
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: light
Keyword 5: Bohr theory
Keyword 6: atomic line spectra
12.
Which of the following statements is (are) true?
An excited atom can return to its ground state by absorbing electromagnetic
I.
radiation.
II.
The energy of an atom is increased when electromagnetic radiation is emitted
from it.
III.
The energy of electromagnetic radiation increases as its frequency increases.
IV.
An electron in the n = 4 state in the hydrogen atom can go to the n = 2 state by
emitting electromagnetic radiation at the appropriate frequency.
V.
The frequency and wavelength of electromagnetic radiation are inversely
proportional to each other.
a)
II, III, IV
b)
III, V
c)
I, II, III
d)
III, IV, V
e)
I, II, IV
Ans: d
Algorithm: No
Chapter/Section: 7.4
Difficulty: Moderate
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: light
13.
T F Bohr's model correctly describes the hydrogen atom and other small atoms.
Ans: False
Algorithm: No
Chapter/Section: 7.4
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: light
Keyword 5: Bohr theory
14.
If n = 2, how many orbitals are possible?
a)
3
b)
4
c)
2
d)
8
e)
6
Ans: b
Algorithm: No
Chapter/Section: 7.6
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: quantum mechanics
Keyword 5: quantum numbers
15.
A given set of p orbitals consists of ______ orbitals.
a)
1
b)
2
c)
3
d)
4
e)
5
Ans: c
Algorithm: No
Chapter/Section: 7.6
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: quantum mechanics
Keyword 5: quantum numbers
16.
Which of the following is an incorrect designation for an atomic orbital?
a)
1s
b)
3d
c)
1p
d)
4f
e)
6s
Ans: c
Algorithm: No
Chapter/Section: 7.6
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: quantum mechanics
Keyword 5: quantum numbers
17.
The number of orbitals having a given value of l is equal to
a)
2l + 1
b)
2n + 2
c)
3l
d)
l + ml
e)
the number of lobes in each orbital
Ans: a
Algorithm: No
Chapter/Section: 7.6
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: quantum mechanics
Keyword 5: quantum numbers
Keyword 6: angular momentum quantum number
18.
T F The magnetic quantum number is related to the orientation of the orbital in space relative to the other
orbitals in the atom.
Ans: True
Algorithm: No
Chapter/Section: 7.6
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: quantum mechanics
Keyword 5: quantum numbers
Keyword 6: magnetic quantum number
19.
Which of the following combinations of quantum numbers is not allowed?
a)
n = 1, l = 1, ml = 0, ms = 1 2
b)
n = 3, l = 0, ml = 0, ms = - 1 2
c)
n = 2, l = 1, ml = -1, ms = 1 2
d)
n = 4, l = 3, ml = -2, ms = - 1 2
e)
n = 4, l = 2, ml = 0, ms = 1 2
Ans: a
Algorithm: No
Chapter/Section: 7.8
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: quantum mechanics
Keyword 5: quantum numbers
20.
The small, but important, energy differences between 3s, 3p, and 3d orbitals are due mainly to
a)
the number of electrons they can hold
b)
their principal quantum number
c)
the Heisenberg uncertainty principle
d)
the penetration effect
e)
Hund's rule
Ans: d
Chapter/Section: 7.9
Difficulty: Moderate
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: quantum mechanics
21.
The complete electron configuration of antimony is
a)
1s22s22p63s23p64s23d104p65s24d105d105p3
b)
1s22s22p63s23p64s23d104d104p3
c)
1s22s22p63s23p64s24p65s24d105d105p3
d)
1s22s22p63s23p64s23d104p65s24d105p3
e)
none of these
Ans: d
Algorithm: Yes
Chapter/Section: 7.11
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: electronic structure of atoms
Keyword 5: electron configuration
Keyword 6: aufbau principle
22.
Which of the following statements about quantum theory is incorrect?
a)
The energy and position of an electron cannot be determined simultaneously.
b)
Lower energy orbitals are filled with electrons before higher energy orbitals.
c)
When filling orbitals of equal energy, two electrons will occupy the same orbital before filling a new
orbital.
d)
No two electrons can have the same four quantum numbers.
e)
All of these are correct.
Ans: c
Algorithm: No
Chapter/Section: 7.11
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
23.
Ti has __________ in its d orbitals.
a)
one electron
b)
two electrons
c)
three electrons
d)
four electrons
e)
none of these
Ans: b
Algorithm: No
Chapter/Section: 7.11
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: electronic structure of atoms
Keyword 5: electron configuration
24.
Germanium has __________ in its 4p orbitals.
a)
one electron
b)
two electrons
c)
three electrons
d)
four electrons
e)
none of these
Ans: b
Algorithm: No
Chapter/Section: 7.11
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: electronic structure of atoms
Keyword 5: electron configuration
Use the following to answer questions 25-26:
Nitrogen has five valence electrons. Consider the following electron arrangements.
2s
25.
2p
a)
 









b)











c)











d)
 








e)
 




Which represents the ground state for N?
a)
option a
b)
option b
c)
option c
d)
option d
e)
option e
Ans: a
Algorithm: No
Chapter/Section: 7.11
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: electronic structure of atoms
Keyword 5: electron configuration
Keyword 6: orbital diagram
26.
Which represents the ground state for the N– ion?
a)
option a
b)
option b
c)
option c
d)
option d
e)
option e
Ans: e
Algorithm: No
Chapter/Section: 7.11
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: electronic structure of atoms
Keyword 5: electron configuration
Keyword 6: orbital diagram
27.
In which group do all the elements have the same number of valence electrons?
a)
P, S, Cl
b)
Ag, Cd, Ar
c)
Na, Ca, Ba
d)
P, As, Se
e)
none of these
Ans: e
Algorithm: No
Chapter/Section: 7.11
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: electronic structure of atoms
Keyword 5: electron configuration
28.
Which of the following electron configurations is correct?
a)
Ga: [Kr]4s23d104p1
b)
Mo: [Kr]5s24d5
c)
Ca: [Ar]4s13d10
d)
Br: [Kr]4s23d104p7
e)
Bi: [Xe]6s24f145d106p3
Ans: e
Algorithm: No
Chapter/Section: 7.11
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: electronic structure of atoms
94.
Which of the following processes represents the ionization energy of bromine?
a)
 Br+(g) + e–
Br(s) 
b)
 Br+(g) + e–
Br(l) 
c)
 Br+(g) + e–
Br(g) 
d)
 Br+(s) + e–
Br(s) 
 Br2+(g) + e–
e)
Br2(g) 
Ans: c
Algorithm: No
Chapter/Section: 7.12
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: periodicity of the elements
Keyword 5: periodic properties
Keyword 6: ionization energy
29.
Order the elements S, Cl, and F in terms of increasing ionization energy.
a)
S, Cl, F
b)
Cl, F, S
c)
F, S, Cl
d)
F, Cl, S
e)
S, F, Cl
Ans: a
Algorithm: No
Chapter/Section: 7.12
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: periodicity of the elements
Keyword 5: periodic properties
Keyword 6: ionization energy
30.
Order the elements S, Cl, and F in terms of increasing atomic radii.
a)
S, Cl, F
b)
Cl, F, S
c)
F, S, Cl
d)
F, Cl, S
e)
S, F, Cl
Ans: d
Algorithm: No
Chapter/Section: 7.12
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: periodicity of the elements
Keyword 5: periodic properties
Keyword 6: atomic radius
31.
Which of the following atoms would have the largest second ionization energy?
a)
Mg
b)
Cl
c)
S
d)
Ca
e)
Na
Ans: e
Algorithm: No
Chapter/Section: 7.12
Difficulty: Moderate
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: periodicity of the elements
Keyword 5: periodic properties
Keyword 6: ionization energy
32.
The first ionization energy of Mg is 735 kJ/mol. The second ionization energy is
a)
735 kJ/mol
b)
less than 735 kJ/mol
c)
greater than 735 kJ/mol
d)
More information is needed to answer this question.
e)
None of these.
Ans: c
Algorithm: No
Chapter/Section: 7.12
Difficulty: Moderate
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: periodicity of the elements
Keyword 5: periodic properties
Keyword 6: ionization energy
33.
Consider the following orderings.
+
2+
3+
I.
Na < Mg < Al < Si
II.
Be < Mg < Ca < Sr
III.
I < Br < Cl < F
4+
IV.
Al < Si < P < Cl
Which of these give(s) a correct trend in ionization energy?
a)
III
b)
II, IV
c)
I, IV
d)
I, III, IV
e)
none of them
Ans: d
Algorithm: No
Chapter/Section: 7.12
Difficulty: Moderate
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: periodic table
Keyword 5: periodic properties
Keyword 6: ionization energy
34.
Which of the following statements is false?
a)
A sodium atom has a smaller radius than a potassium atom.
b)
A neon atom has a smaller radius than an oxygen atom.
c)
A fluorine atom has a smaller first ionization energy than an oxygen atom.
d)
A cesium atom has a smaller first ionization energy than a lithium atom.
e)
All are true.
Ans: c
Algorithm: No
Chapter/Section: 7.12
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: atomic theory
Keyword 4: periodicity of the elements
Keyword 5: periodic properties
Keyword 6: atomic radius
35.
The ratio of the atomic radius to the nuclear radius is approximately:
a)
10–5
b)
105
c)
102
d)
1015
e)
10–15
Ans: b
Algorithm: No
Chapter/Section: 19.1
Difficulty: Easy
Keyword 2: general chemistry
Keyword 3: nuclear chemistry
Keyword 1: Chemistry
36.
An unstable isotope of rhenium, 191Re, has a half-life of 9.8 minutes and is a beta producer. What is the other
product of the reaction?
191
a)
Os
191
b)
W
192
c)
Pt
190
d)
W
190
e)
Os
Ans: a
Algorithm: No
Chapter/Section: 19.1
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: nuclear chemistry
Keyword 4: radioactivity and nuclear
bombardment reactions
Keyword 5: radioactivity
Keyword 6: nuclear equation
37.
214
If 82
Pb undergoes a beta decay and the product of this decay undergoes another beta decay, which nuclide is
produced?
212
a)
82 Bi
b)
214
82
Pb
c)
214
84
Po
d)
212
83
Bi
206
82
e)
Pb
Ans: c
Algorithm: No
Chapter/Section: 19.1
Difficulty: Moderate
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: nuclear chemistry
Keyword 4: radioactivity and nuclear
bombardment reactions
Keyword 5: radioactivity
Keyword 6: beta emission
38.
Electron capture transforms 74 Be into what nuclide?
a)
6
3
Li
b)
7
5
B
c)
7
3
Li
d)
6
5
B
12
6
e)
C
Ans: c
Algorithm: No
Chapter/Section: 19.1
Difficulty: Moderate
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: nuclear chemistry
Keyword 4: radioactivity and nuclear
bombardment reactions
Keyword 5: radioactive decay
Keyword 6: electron capture
39.
Which reaction will produce an isotope of the parent nuclide?
210
a)
84 Po  He + ?
Br  n + ?
b)
88
25
c)
227
89
d)
13
7
Ac  e– + ?
N  e– + ?
73
–
e)
33 As + e  ?
Ans: b
Algorithm: No
Chapter/Section: 19.1
Difficulty: Moderate
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: nuclear chemistry
Keyword 4: radioactivity and nuclear
bombardment reactions
Keyword 5: radioactive decay
40.
T F The so-called “magic numbers” of protons and neutrons produce special chemical stability.
Ans: False
Algorithm: No
Chapter/Section: 19.1
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: nuclear chemistry
Keyword 4: radioactivity and nuclear
bombardment reactions
Keyword 5: radioactivity
Keyword 6: nuclear stability
41.
T F As atomic mass increases, the proton/neutron ratio of stable nuclides decreases.
Ans: True
Algorithm: No
Chapter/Section: 19.1
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: nuclear chemistry
Keyword 4: radioactivity and nuclear
bombardment reactions
Keyword 5: radioactivity
Keyword 6: nuclear stability
42.
The rate constant for the beta decay of thorium-234 is 2.881  10–2 / day. What is the half-life of this nuclide?
a)
48.11 days
b)
1.218 days
c)
0.693 days
d)
24.05 days
e)
96.22 days
Ans: d
Algorithm: Yes
Chapter/Section: 19.2
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: nuclear chemistry
Keyword 4: radioactivity and nuclear
bombardment reactions
Keyword 5: rate of radioactive decay
Keyword 6: half-life
Use the following to answer questions 43-44:
A certain radioactive sample contains 2.4  103 nuclides at a certain time (t = 0); 3.0 h later the sample contains
6.0  102 nuclides.
43.
For this sample the ratio of the decay rates at t = 0 to t = 3.0 h is:
a)
1.0
b)
8.0
c)
4.0
d)
16
e)
none of these
Ans: c
Algorithm: No
Chapter/Section: 19.2
Difficulty: Moderate
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: nuclear chemistry
Keyword 4: radioactivity and nuclear
bombardment reactions
Keyword 5: rate of radioactive decay
44.
The value of the rate constant for this process is:
a)
2.2 h–1
b)
4.6  10–1 h–1
c)
1.6 h–1
d)
3.0 h–1
e)
none of these
Ans: b
Algorithm: No
Chapter/Section: 19.2
Difficulty: Moderate
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: nuclear chemistry
Keyword 4: radioactivity and nuclear
bombardment reactions
Keyword 5: rate of radioactive decay
45.
The half-life of 90 Sr is 28.1 years. How long will it take a 10.0-g sample of 90 Sr to decompose to 0.77 g?
a)
70 years
b)
208 years
c)
104 years
d)
156 years
e)
none of these
Ans: c
Algorithm: Yes
Chapter/Section: 19.2
Difficulty: Moderate
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: nuclear chemistry
Keyword 4: radioactivity and nuclear
bombardment reactions
Keyword 5: rate of radioactive decay
46.
The rate constant for the decay of 2045Ca is 4.232  10–3 / day. What is the half-life of 2045Ca ?
a)
81.88 days
b)
163.8 days
c)
327.5 days
d)
409.4 days
e)
none of these
Ans: b
Algorithm: Yes
Chapter/Section: 19.2
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: nuclear chemistry
Keyword 4: radioactivity and nuclear
bombardment reactions
Keyword 5: rate of radioactive decay
Keyword 6: half-life
47.
A sample of wood from an Egyptian mummy case gives a 14 C count of 9.1 cpm/gC (counts per minute per
gram of carbon). How old is the wood? (The initial decay rate of 14 C is 15.3 cpm/g C, and its half-life is 5730
years.)
a)
2148 yr
b)
6796 yr
c)
4296 yr
d)
5346 yr
e)
none of these
Ans: c
Algorithm: Yes
Chapter/Section: 19.4
Difficulty: Moderate
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: nuclear chemistry
Keyword 4: radioactivity and nuclear
bombardment reactions
Keyword 5: rate of radioactive decay
Keyword 6: radioactive dating
48.
If a tree dies and the trunk remains undisturbed for 13511 years, what percentage of original 14 C is still
present? (half-life of 14 C = 5730 years)
a)
80.5%
b)
19.5%
c)
39.0%
d)
29.3%
e)
2.36%
Ans: b
Algorithm: Yes
Chapter/Section: 19.4
Difficulty: Moderate
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: nuclear chemistry
Keyword 4: radioactivity and nuclear
bombardment reactions
Keyword 5: rate of radioactive decay
Keyword 6: radioactive dating
49.
The half-life for electron capture for 1940 K is 1.3 billion years. What will be the 1940 K / 1840 Ar ratio in a rock that is
5.0 billion years old?
a)
0.070
b)
13
c)
0.075
d)
3.8
e)
14
Ans: c
Algorithm: Yes
Chapter/Section: 19.4
Difficulty: Easy
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: nuclear chemistry
Keyword 4: radioactivity and nuclear
bombardment reactions
Keyword 5: rate of radioactive decay
Keyword 6: radioactive dating
50.
Which statement is true about the following reaction?
14
17
4
+

7 N
8 O
2 He
+
1
1
H
13.992
4.0015
16.9986
1.0073
amu
amu
amu
amu
a)
Energy is absorbed in the reaction.
b)
Energy is released in the reaction.
c)
No energy change is associated with the reaction.
d)
Not enough information is given to determine the energy change.
e)
None of these.
Ans: a
Algorithm: No
Chapter/Section: 19.5
Difficulty: Moderate
Keyword 1: Chemistry
Keyword 2: general chemistry
Keyword 3: nuclear chemistry
Keyword 4: energy of nuclear reactions
Keyword 5: mass-energy calculations