Radioactivity: Important Notes
Name: ________________________________ Period: _____
1. Fill in the following table for the different types of radioactive decay: Reference – Text Chapter 19
NOTE: N = neutron P = proton e = electron NUCLEON = a particle in the nucleus (N and P)
Type of Radiation
Particles Emitted
Net Charge of
Emitted Particles
Change in Atomic
# (#P)
Change in
Mass # (#P + #N)
Alpha (α)
Beta (β)
Gamma (ɣ)
2. Fill in the following table for the different radioactive isotopes:
Isotope
Name
Element
Atomic #
Isotope
Mass #
(P+N)
Type of
decay
Radium-226
Alpha
Uranium-238
Alpha
Rhenium-187
Beta
# P lost
/gained
New
Atomic #
# N lost
/gained
New
Isotope
Mass #
New Isotope Name
Radioactivity: Important Notes
Name: ________________________________ Period: _____
1. Fill in the following table for the different types of radioactive decay: Reference – Text Chapter 19
NOTE: N = neutron P = proton e = electron NUCLEON = a particle in the nucleus (N and P)
Type of Radiation
Particles Emitted
Net Charge of
Emitted Particles
Change in Atomic
# (#P)
Change in
Mass # (#P + #N)
Alpha (α)
Beta (β)
Gamma (ɣ)
2. Fill in the following table for the different radioactive isotopes:
Isotope
Name
Element
Atomic #
Isotope
Mass #
(P+N)
Type of
decay
Radium-226
Alpha
Uranium-238
Alpha
Rhenium-187
Beta
# P lost
/gained
New
Atomic #
# N lost
/gained
New
Isotope
Mass #
New Isotope Name
Answer Key
Radioactivity: Important Notes
Name: ________________________________ Period: _____
1. Fill in the following table for the different types of radioactive decay:
NOTE: N = neutron P = proton e = electron NUCLEON = a particle in the nucleus (N and P)
Type of Radiation
Alpha (α)
Beta (β)
Gamma (ɣ)
Particles Emitted
Net Charge of
Emitted Particles
Change in Atomic
# (#P)
Change in
Mass # (#P + #N)
2P+2N
1N1P+1e
None (energy!)
+2
-1
None (energy!)
Decrease 2
Increase 1
No change
Decrease 4
No change
No change
2. Fill in the following table for the different radioactive isotopes:
Isotope
Name
Element
Atomic #
Isotope
Mass #
(P+N)
Type of
decay
# P lost
/gained
New
Atomic #
# N lost
/gained
New
Isotope
Mass #
New Isotope Name
Radium-226
88
226
Alpha
2 lost
86
2 lost
222
Radon-222
Uranium-238
92
238
Alpha
2 lost
90
2 lost
234
Thorium-234
Rhenium187
75
187
Beta
1
gained
76
1
187
converted
Osmium-187