87Fr
Francium
Alkali metal
Properties of Francium
- Atomic number (Z)
- 87
- Symbol
- Fr
- Name
- Francium
- Atomic mass
- 223 u
- Period
- 7
- Group
- 1
- Family
- Alkali metals
- Classification
- Alkali metal
- Electron configuration
- [Rn] 7s¹
About Francium
Francium is a chemical element with symbol Fr and atomic number 87 (atomic mass of about 223 u). It is classified as a alkali metal on the periodic table.
On the periodic table, Francium is located in period 7, in group 1, belonging to the alkali metals family. An element's position reveals trends in its properties, such as atomic radius, electronegativity and metallic character.
The electron configuration of Francium is [Rn] 7s¹, which determines how it forms chemical bonds and takes part in reactions.