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. c 12: Nuclear Chemistry
7 Beta decay - Natural transmutation: Recalling concept facts
1. As an atom of a radioactive isotope emits a beta particle, the mass number of the atom
1) Increases 2) Decreases 3) Remains the same
2. As a radioactive isotope emits a beta particle, the atomic number of the atom
1) Decreases 2) Increases 3) Remains the same
3. When a radioisotope undergoes a beta decay, the number of protons of the atom will
1) Increase 2) Decrease 3) Remain the same
4. As a radioisotope undergoes releases a beta particle during a nuclear decay, the number of neutrons
1) Decreases 2) Increases 3) Remains the same
5. When a beta particle is emitted by an atom, the atomic number of the atom will
Teacher Preview Copy
Teacher Preview Copy
1) Increase by 1 3) Increase by 1
2) Decrease by 1 4) Remain the same
6. As a radioactive isotope undergoes a beta decay, the mass number of the atom
1) Increases by 2 3) Decreases by 1
2) Increases by 1 4) Remains unchanged
7. Compared to an atom before a beta decay, the number of protons of the atom after the decay will be
1) Greater by 1 3) Lesser by 2
2) Greater by 2 4) The same
8. Beta decay: Recognizing beta decay equations
1. Which nuclear equation correctly represents a decay with the emission of a beta particle?
32
214
0
32
0
214
Bi + e
Pb --------------
1) 82 83 -1 3) P + e -------- Si
15 -1 14
4
1
43
0
42
2) 239 Pu --------------- 235 U + He 4) K + n --------- Ar + e
90 92 2 19 0 18 +1
2. Which equation is showing a beta decay? 3) 198 Au -------------- 198 Hg + e
0
224
4
220
1) Fr + He ---- Ac
87 2 89 79 80 -1
43
43
0
42
42
0
2) Sc -------------- - Ca + e 4) K + e ------- Ar
21 20 +1 19 -1 18
3. Which equation correctly represents a nuclear decay with a release of a beta particle?
0
0
1) 116 In --------------- 116 Sn + e 3) 234 Th -------------- 234 Pa + e
49 50 -1 90 91 +1
226
4
222
1
37
38
Rn + He
4)
Ra ---------------
2) K ----------------- Ar + p 88 86 2
19 18 1
4. Which nuclear reaction is a beta decay? 239 235
218
218
Rn + X
At --------------
1) 85 86 3) Pu ------------ -- U + X
92
94
2) H + H -------- X 4) B + He ---- N
1
11
14
4
2
1 1 5 2 7
5. Which transmutation resulted in the emission of a beta particle?
53
53
1) 210 Po --------------- 206 Pb + X 3) Fe -------------- Mn + X
84 82 26 25
2) 206 Ti --------------- Pb + X 4) S + n ------ P +
206
1
32
32
82 16 0 15
Copyright©2010 E3 Scholastic Publishing. All Rights Reserved. SurvivingChem.com 343
. c 12: Nuclear Chemistry
7 Beta decay - Natural transmutation: Recalling concept facts
1. As an atom of a radioactive isotope emits a beta particle, the mass number of the atom
1) Increases 2) Decreases 3) Remains the same
2. As a radioactive isotope emits a beta particle, the atomic number of the atom
1) Decreases 2) Increases 3) Remains the same
3. When a radioisotope undergoes a beta decay, the number of protons of the atom will
1) Increase 2) Decrease 3) Remain the same
4. As a radioisotope undergoes releases a beta particle during a nuclear decay, the number of neutrons
1) Decreases 2) Increases 3) Remains the same
5. When a beta particle is emitted by an atom, the atomic number of the atom will
Teacher Preview Copy
Teacher Preview Copy
1) Increase by 1 3) Increase by 1
2) Decrease by 1 4) Remain the same
6. As a radioactive isotope undergoes a beta decay, the mass number of the atom
1) Increases by 2 3) Decreases by 1
2) Increases by 1 4) Remains unchanged
7. Compared to an atom before a beta decay, the number of protons of the atom after the decay will be
1) Greater by 1 3) Lesser by 2
2) Greater by 2 4) The same
8. Beta decay: Recognizing beta decay equations
1. Which nuclear equation correctly represents a decay with the emission of a beta particle?
32
214
0
32
0
214
Bi + e
Pb --------------
1) 82 83 -1 3) P + e -------- Si
15 -1 14
4
1
43
0
42
2) 239 Pu --------------- 235 U + He 4) K + n --------- Ar + e
90 92 2 19 0 18 +1
2. Which equation is showing a beta decay? 3) 198 Au -------------- 198 Hg + e
0
224
4
220
1) Fr + He ---- Ac
87 2 89 79 80 -1
43
43
0
42
42
0
2) Sc -------------- - Ca + e 4) K + e ------- Ar
21 20 +1 19 -1 18
3. Which equation correctly represents a nuclear decay with a release of a beta particle?
0
0
1) 116 In --------------- 116 Sn + e 3) 234 Th -------------- 234 Pa + e
49 50 -1 90 91 +1
226
4
222
1
37
38
Rn + He
4)
Ra ---------------
2) K ----------------- Ar + p 88 86 2
19 18 1
4. Which nuclear reaction is a beta decay? 239 235
218
218
Rn + X
At --------------
1) 85 86 3) Pu ------------ -- U + X
92
94
2) H + H -------- X 4) B + He ---- N
1
11
14
4
2
1 1 5 2 7
5. Which transmutation resulted in the emission of a beta particle?
53
53
1) 210 Po --------------- 206 Pb + X 3) Fe -------------- Mn + X
84 82 26 25
2) 206 Ti --------------- Pb + X 4) S + n ------ P +
206
1
32
32
82 16 0 15
Copyright©2010 E3 Scholastic Publishing. All Rights Reserved. SurvivingChem.com 343
