Francium (version 2)
Francium (version 2) - Periodic Table of Videos
Introduction
This video from the Periodic Table of Videos provides an in-depth look at francium, discussing its properties, reactivity, and challenges associated with studying this highly radioactive element.
Main Points
- Alkali Metals Series:
- Francium is part of the alkali metals group, which includes lithium, sodium, potassium, rubidium, and cesium. The reactivity of these metals increases down the group.
- Reactivity:
- Francium would theoretically be more reactive than cesium due to its larger atomic size, which makes it easier to lose an outer electron. This should result in a very strong reaction with water.
- Radioactivity:
- Francium is highly radioactive, making it difficult to obtain a large enough sample to observe its chemical reactions directly. Its radioactivity also makes it challenging to study its chemistry in detail.
- Discovery and Naming:
- Francium was discovered in 1939 by a student of Madame Curie, five years after her death, and was named after France.
- Physical Properties:
- Due to its radioactivity, francium would likely be warm to the touch and possibly exist as a liquid at room temperature. It might have unique visual properties, such as being colored, similar to cesium's gold hue.
Conclusion
Francium's extreme radioactivity poses significant challenges to studying its chemical properties, but it remains a fascinating element due to its place in the alkali metals group and its potential reactivity.