Name:__________________________________________
Know the following terms:
Nucleon
Nuclide
Radioisotope
 Nuclear Transmutation
 Fission
 Fusion
Half-Life
Complete the following nuclear reactions:
1.
2.
3.
4.
5.
6.
7.
27
13
30
Al  24He 15
P  _____________
31
15
32
P  12H 15
P  _______
35
Cl  ________ 16
S 
37
17
2
1
H  _________  01 n
31
15
14
7
28
P 11H 14
Si  _______
N  ______ 178 O  11H
43
19
43
K  20
Ca  _____
8. 13 H 23He  ______
9. 36 Li  01n 24 He  ________
0
10. 214
82 Pb 1   ________
11. 2963Cu  12H 13H  _______
12. 36 Li 11H  24 He  _________
13. ________  237
93 Np  
14. 49 Be   36 Li  _______
Finish the following equations and determine which is Fission and which is Fusion?
(be sure to use your definition from above)
Fission/Fusion
11
4
14
1. 5 B  2 He  7 N  _____________
___________________________
95
U  01n42
Mo  201n  ______
___________________________
Pu    n  _______
___________________________
38
Cu 11H 17
Cl  01n  ______
___________________________
235
92
2.
3.
239
94
4.
63
29
Name of
Decay
Alpha
Beta
Gamma
Neutron
1
0
Symbol for Decay
(both Greek letter and
A
nuclear symbol) Z X
Decay’s Effect on the nucleus
Mass No. & Atomic No. Effects
Finish the following equations and determine the type of decay or emission that occurs. (α, β, or γ)
1. What type of decay or emission occurs when 23490Th* decays into 23490Th ? *see notes.(show the reaction)
2. What type of decay or emission occurs when 23892U decays into 23490Th ? (show the reaction)
3. What type of decay or emission occurs when 3014Si decays into 3015P ? (show the reaction)
Solve the following Half-Life problems:
1. The half-life of Polonium-210 is 138.4 days. How many milligrams of Polonium-210 remain after
415.2 days if you started with 2.0mg of the isotope?
2. Assuming a half-life of 1599 years, how many years will be needed for Radium to decay to 1/16 of the
original 16/16?
3. A sample contains 16mg of Polonium-218. After 12 min., the sample will contain 1.0mg of
Polonium-218. What is the half-life of Polonium-218?
4. A sample contains 4.0mg of Uranium-238. After 4.46 x 109 years, the sample will contain 2.0mg of
Uranium-238. What is the half-life of Uranium-238?

3
5. Try to fill in the lines
for each using
210
80
Hg
222
86
Rn
particle removed
Rn

1
α, β, γ, 0 n , particles
or an isotope ( ZA  ).
particle added
216
86


197
79
Au
197
79
Au
200
78
Pt
204
80
Hg