Ac
INTRODUCTION
Actinium is a radioactive metallic element found in all uranium ores. Its name comes from the Greek word aktinos, which means 'ray.' 2 parts to every 10 billion parts of uranium is actinum.
Actinium-227, a naturally-occurring isotope, is a member of the actinium series, called the actinium decay series, resulting from the radioactive decay of uranium-235.
BASIC INFORMATIONS
- Atomic Number
- 89
- Atomic Mass
- 227
- Ionic radius
- 1.12
- Ionization energy
- N/A
- Electronic config
- 2,8,18,32,18,9,2
- Principal Valency
- +2
- Density g/cm³
- N/A
- Melting point °C
- 1050
- Boiling point °C
- 3198
- Type of Element
- Metal
- Electronegativity
- 1.1
- Element Category
- Scandium Group
- Appearance
- silvery white solid
- Block
- d-block
- Period
- 7
- Group
- 3
- No of Isotopes
- 31
- Occurrence
- Radioactive
- Abundance in ppm
- Trace
- Year of Discovery
- 1899
EXTRACTION
It is obtain by ion exchange
OXIDATION STATES
+3 (Neutral)
MAJOR SOURCE
Uranium ores
HALF LIFE
21.7 years
ECONOMIC IMPORTANCE
* Their is hope in actinium for the treatment of skin diseases, superficial tumors, and other disorders near the surface of the tissue where penetrating radiation is not
desirable.
