Decay series

Definition

A decay series is a sequence of radioactive decays where the product of one decay becomes the parent nuclide for the next. This process continues until a stable nuclide is formed.

5 Must Know Facts For Your Next Test

1. A decay series often starts with a heavy, unstable parent isotope and ends with a stable isotope.
2. The uranium-238 decay series eventually leads to the formation of lead-206.
3. Alpha and beta decays are common types of decay in these series.
4. Each step in a decay series can have different half-lives, ranging from fractions of a second to billions of years.
5. Decay series are crucial for understanding radiometric dating techniques.

Review Questions

• What is the end product of the uranium-238 decay series?
• What types of decay are commonly involved in a decay series?
• How do different half-lives affect the steps in a decay series?

Related terms

Alpha Decay:

A type of radioactive decay where an alpha particle (2 protons and 2 neutrons) is emitted from the nucleus.

Beta Decay:

A type of radioactive decay where a beta particle (electron or positron) is emitted from the nucleus.

Half-life:

The time required for half of the radioactive nuclei in a sample to undergo decay.