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Actinium

Definition:

Actinium is a radioactive chemical element with the symbol Ac and atomic number 89. It belongs to the actinide series of elements and is commonly found in uranium ores.

Usage:

Noun:

1. Actinium is often used in the production of neutron sources and as a catalyst in scientific research.

2. Actinium can also be utilized in cancer treatment as a targeted therapy.

3. The discovery of actinium was a significant milestone in understanding the structure of the periodic table.

Adjective:

1. The actinium decay chain consists of various radioactive isotopes.

2. Scientists conducted actinium experiments to investigate its properties and behavior.

Examples:

Noun:

• The researchers obtained a small sample of actinium for their study.
• Actinium has potential applications in nuclear energy research.
• Doctors are considering using actinium-225 for targeted alpha therapy.

Adjective:

• The actinium decay series involves multiple radioactive transformations.
• Scientists are studying the actinium compounds' behavior in different environments.

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