Exam 24: Nuclear Reactions and Their Applications

The radiochemist, Will I. Glow, studied thorium-232 and found that 2.82 *10¯⁷ moles emitted 8.42 *10⁶ $\alpha$ particles in one year. What is the decay constant for thorium-232?

Which of the following isotopes is definitely unstable?

Write a complete, balanced equation to represent the beta decay of thallium-207.

Gamma rays are not deflected by an electric field.

Which one of the following is an incorrect representation of the indicated particle or nucleus?

The isotope is unstable. This is predictable because

Select the nuclide that completes the following nuclear reaction:

Write a complete, balanced equation to represent the formation of manganese-55 by the beta decay of another nuclide.

The radioisotope will decay through

Positron decay and electron capture have the same net effect on the Z and N values of a nucleus.

Select the nuclide that completes the following nuclear reaction:

Which one of the following is a subatomic particle closely related to the positron?

The radioisotope will decay through

Fill in missing sub- and superscripts for all particles to complete the following equation for beta decay.

Identify the missing species in the following nuclear transmutation:

The isotopes and are all stable, while is radioactive. The mode of decay for is most likely to be

The (negative) binding energy per nucleon reaches a maximum for the isotope .

A 7.85 *10¯⁵ mol sample of copper-61 emits 1.47 *10¹⁹ positrons in 90.0 minutes. What is the decay constant for copper-61?

Select the nuclide that completes the following nuclear reaction:

No alpha decay is observed for isotopes of elements with Z < 83.