Pm

Promethium is highly radioactive. Only one isotope, Promethium-147, is found in nature, and only in trace amounts. Pm-147 has a half-life of 2.6234 years. Other isotopes which have been synthesized have longer half-lives.

Uses

• Luminous paint
• Atomic batteries
• Portable X-Ray sources

Promethium at The Periodic Table of Videos (Alternate Version)