Difference between revisions of "Einsteinium"
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Revision as of 15:38, 24 August 2020
 A 300 microgram sample of Einsteinium, glowing in the dark. | |||||
| General properties | |||||
|---|---|---|---|---|---|
| Name, symbol | Einsteinium, Es | ||||
| Appearance | Metallic. Glows blue in the dark. | ||||
| Einsteinium in the periodic table | |||||
| |||||
| Atomic number | 99 | ||||
| Standard atomic weight (Ar) | |||||
| Group, block | n/a; f-block | ||||
| Period | period 7 | ||||
| Electron configuration | [Rn] 5f11 7s2 | ||||
per shell | 2, 8, 18, 32, 29, 8, 2 | ||||
| Physical properties | |||||
| Phase | Solid | ||||
| Melting point | 1133 K (860 °C, 1580 °F) | ||||
| Boiling point | 1269 K (996 °C, 1825 °F) (Estimated) | ||||
| Density near r.t. | 8.84 g/cm3 | ||||
| Atomic properties | |||||
| Oxidation states | +2, +3, +4 | ||||
| Electronegativity | Pauling scale: 1.3 | ||||
| energies | 1st: 619 kJ/mol | ||||
| Miscellanea | |||||
| Magnetic ordering | paramagnetic | ||||
| CAS Registry Number | 7429-92-7 | ||||
| History | |||||
| Discovery | Lawrence Berkeley National Laboratory (1952) | ||||
| Named by | after Albert Einstein | ||||
Einsteinium is an extremely radioactive element. It's very close to impossible to obtain this element in a hobby or even a professional laboratory.
Contents
Properties
Chemical
Physical
Availability
To do
Isolation
To do
Projects
- Element collection
Handling
Safety
Einsteinium is extremely radioactive. Any sort of contact or exposition will more likely than not lead to radiation poisoning.
Storage
Store in a thick lead container.
Disposal
To do
