Fr
INTRODUCTION
Francium is a radioactive metallic element that closely resembles cesium in chemical properties. Francium is one of the alkali metals, and was named after the country, France.
Francium is the heaviest of the alkali metals, and also the most electropositive element. The element is extremely rare, because all its isotopes are radioactive and short-lived.
BASIC INFORMATIONS
- Atomic Number
- 87
- Atomic Mass
- 223
- Atomic radius
- N/A
- Ionization energy
- N/A
- Electronic config
- 2,8,18,32,18,8,1
- Principal Valency
- +1
- Density g/cm³
- N/A
- Melting point °C
- 27
- Boiling point °C
- 677
- Type of Element
- Metal
- Electronegativity
- 0.7
- Element Category
- Alkaline Metal
- Appearance
- N/A
- Block
- s-block
- Period
- 7
- Group
- 1
- No of Isotopes
- N/A
- Occurrence
- Radioactive
- Abundance in ppm
- Trace
- Year of Discovery
- 1939
EXTRACTION
It is extracted by physical separation
OXIDATION STATES
+1 (Strongly basic)
MAJOR SOURCE
Radioactive decay of actinium
EXAMPLES OF COMPOUND PRESENT
Unstable to form compound
ECONOMIC IMPORTANCE
* It is only used for radioactive research or experimental purposes.
