Fr (Noun)
Meaning
A radioactive element of the alkali-metal group discovered as a disintegration product of actinium.
Classification
Nouns denoting substances.
Examples
- Francium is a highly radioactive element with no stable isotopes.
- The most stable isotope of francium has a half-life of just 22 minutes.
- Francium is a member of the alkali-metal group and is highly reactive.
- Francium was first discovered in 1939 as a disintegration product of actinium.
- Due to its highly radioactive nature, francium has no commercial applications.