Francium (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 metal that decays quickly into radium or radon.
- The isolation of francium from natural sources proved to be extremely difficult due to its highly radioactive nature.
- Francium has no known uses and is not found naturally on Earth in its elemental form.
- The discovery of francium was announced in 1939 by French physicist Marguerite Perey, who isolated it from actinium.
- Francium is a soft, silvery-white alkaline earth metal that is extremely rare and highly reactive.