A

Actinium

Quick Reference
Formula / NotationAc
Molecular Weight227
CategoryElements

What is Actinium?

Actinium is a radioactive silvery-white metal and the first member of the actinide series. It glows blue in the dark due to its radioactivity and was the first non-primordial radioactive element to be discovered.

Formula & Notation

Ac

Properties & Characteristics

Appearance: silvery-white, glow blue. Melting point: 1050 °C. Boiling point: 3198 °C. Density: 10.07 g/cm³.

Uses & Applications

Used as a neutron source in nuclear reactors. Actinium-225 is investigated as a targeted alpha-particle cancer therapy agent.

Safety Information

Radioactive hazard. Bone-seeking element similar to radium. Strict radiation protection protocols required.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Actinium
Formula Ac
Molecular Weight 227
Category Elements

Frequently Asked Questions

Actinium is a radioactive silvery-white metal and the first member of the actinide series. It glows blue in the dark due to its radioactivity and was the first non-primordial radioactive element to be discovered.

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