INTRODUCTION
Einsteinium is a synthetic radioactive element, and one of the transuranium (elements that is after uranium on the periodic table) in the actinide series of the periodic table. It was named after Albert Einstein.
The element was discovered in the debris produced by a thermonuclear explosion. It evaporates more readily than barium or calcium, which were the most readily vaporizable divalent elements previously known.
BASIC INFORMATIONS
- Atomic Number
- 99
- Atomic Mass
- 252
- Ionic radius
- N/A
- Ionization energy
- N/A
- Electronic config
- 2,8,18,32,29,8,2
- Principal Valency
- +2
- Density g/cm³
- N/A
- Melting point °C
- 860
- Boiling point °C
- N/A
- Type of Element
- Metal
- Electronegativity
- N/A
- Element Category
- Actinide series
- Appearance
- Silvery solid
- Block
- f-block
- Period
- 9
- Group
- 14
- No of Isotopes
- 19
- Occurrence
- Artificially Made
- Abundance in ppm
- Nil
- Year of Discovery
- 1952
EXTRACTION
It is obtain by electrolysis of its fused salts or reducing its halides with calcium
OXIDATION STATES
+2,+3,+4
MAJOR SOURCE
Irradiated plutonium and other elements
HALF LIFE
250 days
ECONOMIC IMPORTANCE
* It is used extensively in research works.