Write a nuclear equation for the indicated decay of each nuclide. a. U-234 (alpha) b. Th-230 (alpha)

Write a nuclear equation for the indicated decay of each nuclide. c. Pb-214 (beta)

Write a nuclear equation for the indicated decay of each nuclide. d. N-13 (positron emission)

Write a nuclear equation for the indicated decay of each nuclide. e. Cr-51 (electron capture)

Write a nuclear equation for the indicated decay of each nuclide. a. Po-210 (alpha) b. Ac-227 (beta)

Write a nuclear equation for the indicated decay of each nuclide.

c. Tl-207 (beta)

Write a nuclear equation for the indicated decay of each nuclide.

d. O-15 (positron emission)

Write a nuclear equation for the indicated decay of each nuclide. e. Pd-103 (electron capture)

Write a partial decay series for Th-232 undergoing the sequential decays: a, b, b, a.

Write a partial decay series for Rn-220 undergoing the sequential decays: a, a, b, b.

Fill in the missing particles in each nuclear equation.

a. ____ → ²¹⁷₈₅At + ⁴₂He

b. ²⁴¹₉₄Pu → ²⁴¹₉₅Am + ____

c. ¹⁹₁₁Ne → ¹⁹₁₀Ne + ____

d. ⁷⁵₃₄Se + _____ → ⁷⁵₃₃As

Fill in the missing particles in each nuclear equation. a. ²⁴¹₉₅Am → ²³⁷₉₃Np + ____

Fill in the missing particles in each nuclear equation. b. _____ → ²³³₉₂U + ⁰_-1e

Fill in the missing particles in each nuclear equation. c. ²³⁷₉₃Np → _____ + ⁴₂He

Fill in the missing particles in each nuclear equation. d. ⁷⁵₃₅Br → ____ + ⁰₊₁e

Determine whether or not each nuclide is likely to be stable. State your reasons. a. Mg-26 b. Ne-25 c. Co-51

Determine whether or not each nuclide is likely to be stable. State your reasons. d. Te-124

The first six elements of the first transition series have the following number of stable isotopes:

Element Number of Stable Isotopes

Sc 1

Ti 5

V 1

Cr 3

Mn 1

Fe 4

Explain why Sc, V, and Mn each have only one stable isotope while the other elements have several.

Predict a likely mode of decay for each unstable nuclide. a. Mo-109

Predict a likely mode of decay for each unstable nuclide. b. Ru-90 c. P-27 d. Sn-100

Predict a likely mode of decay for each unstable nuclide. a. Sb-132 b. Te-139 d. Ba-123

Predict a likely mode of decay for each unstable nuclide. c. Fr-202

Which nuclide in each pair would you expect to have the longer half-life? a. Cs-149 or Cs-139 b. Fe-45 or Fe-52

One of the nuclides in spent nuclear fuel is U-235, an alpha emitter with a half-life of 703 million years. How long will it take for the amount of U-235 to reach 10.0% of its initial amount?

A patient is given 0.050 mg of technetium-99m, a radioactive isotope with a half-life of about 6.0 hours. How long does it take for the radioactive isotope to decay to 1.0⨉10^-3 mg? (Assume no excretion of the nuclide from the body.)

A radioactive sample contains 1.55 g of an isotope with a halflife of 3.8 days. What mass of the isotope remains after 5.5 days?

A sample of F-18 has an initial decay rate of 1.5⨉10⁵/s. How long will it take for the decay rate to fall to 2.5⨉10³/s? (F-18 has a half-life of 1.83 hours.)