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Gcc Chm152ll: Nuclear Chemistry - Radioactivity, Decay, Dating, And Other Hazards Worksheets Page 3

Exercise 1: Identify the unknown element in each to complete the following nuclear equations:

a. What element is formed when plutonium-239 is struck by an alpha particle?











_____

239

b. Uranium-235 undergoes nuclear fission when it collides with a neutron:

235

_____









Exercise 2: Write complete nuclear equations for the following processes:

a. Neptunium-237 is produced when a radioactive isotope undergoes alpha decay.

b. Platinum-194 is produced when a radioactive isotope undergoes beta decay.

Exercise 3: Actinium-227 is produced during a radioactive decay series. This nuclide is also unstable and

several successive decay reactions occur before a stable nuclide, Pb-207, is eventually formed.

Write balanced nuclear equations for the decay of Actinium-227 to lead-207 in eight steps.

a. Step 1: Actinium-227 decays by alpha emission. (Actinium has the element symbol Ac.)

b. Step 2: The daughter product in part a decays by beta and gamma emission.

c. Step 3: The daughter product in part b decays by alpha and gamma emissions.

d. Step 4: The daughter product in part c decays by alpha and gamma emissions.

e. Step 5: The daughter product in part d decays by alpha emission.

GCC CHM152LL: Nuclear Chemistry

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Gcc Chm152ll: Nuclear Chemistry - Radioactivity, Decay, Dating, And Other Hazards Worksheets Page 3