Francium
Fr
Physical Properties
- Atomic Mass: 223
- Atomic Radius: Unknown
- Density: Unknown
- Melting Point: 294 K
- Boiling point: 923 K
- At room temperature, Francium is a liquid
- Appearance: Brown and soft
- Conductivity: Very High
- Malleability: High
- Hardness: Soft
Chemical Properties
- Flammability: High
- Radioactivity: Very High
Identifying Information
- Atomic Number: 87
- Mass Number: 223
- Protons: 87
- Neutrons: 136
- Electrons: 87
- Francium is included in the Alkali Metals. These are soft and radioactive metals. Francium is the heaviest of all the elements in this group
History and Discovery
Francium was discovered in France in 1939 by Marguerite Perey while analyzing the radioactive decaying sequence of Actinium
Applications and Uses
No uses outside of basic scientific research. Very small amounts are found in Uranium Ores.
Fun Facts
Francium got its name because it was discovered in France
Sources Cited
"Periodic Table – Royal Society of Chemistry." Periodic Table – Royal Society of Chemistry. N.p., n.d. Web. 15 Jan. 2016.
"Scientists Trap Rarest Element - Francium." Scientists Trap Rarest Element - Francium. N.p., n.d. Web. 15 Jan. 2016
"Francium Element Facts." Chemicool. N.p., n.d. Web. 15 Jan. 2016.