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Nuclear Physics
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Natural Radiation - Questions IV.1.2
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1.
Make a pie chart to describe the origin of radiation exposure for an average individual in Canada.
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2.
What happens to the atomic number and mass number of an element when it undergoes: alpha decay, beta decay, and gamma decay?
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Atomic Number
Mass Number
Alpha Decay
Beta Decay
Gamma Decay
Reduces by 2
Increases by 1
Remains the same
Reduces by 4
Remains the same
Remains the same
3.
With the use of a periodic table determine which elements have the following atomic numbers.
a)
83
b)
7
c)
56
4.
Write the alpha decay equation in which uranium-238 changes to thorium-234.
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5.
Write the beta decay equation for thorium-234 as it changes to.
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6.
Write the beta decay equation as
^{212}
Bi
changes to
^{212}
Po
.
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7.
Give the value for x and y in the following decay equations.
a)
x=
y=
b)
x=
y=
c)
x=
y=
8.
Fill in the missing blanks for the following equations.
a)
x=
y=
Z=
b)
x=
y=
Z=
c)
x=
y=
Z=
9.
When undergoes alpha decay is produced. This undergoes beta decay and produces which will then undergo beta decay producing . Write the nuclear decay equations associated with this decay series.
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10.
Lead - 214 starts a decay series where four beta and two alpha particles are emitted. What is the final stable element? State its atomic number and atomic mass.
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Since for alpha decay:
atomic mass decreases by 4
atomic number decreases by 2
beta decay:
atomic mass remains the same
atomic number increases by 1
The final stable element is lead
.
11.
Plutonium - 241 starts a decay series where eight alpha and five beta particles are emitted. What is the final stable element? State its atomic number and atomic mass.
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The final stable element is bismuth
.
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