![Quartz vial (9 mm diameter) containing ~300 micrograms of solid 253Es. The illumination produced is a result of the intense radiation from 253Es.](//upload.wikimedia.org/wikipedia/commons/thumb/5/55/Einsteinium.jpg/220px-Einsteinium.jpg) |
|
Pronunciation | (eyen-STY-nee-əm) |
---|
Appearance | silver-colored |
---|
Mass number | [252] |
---|
|
|
Group | మూస:Infobox element/symbol-to-group/format |
---|
Period | period 7 |
---|
Block | f-block |
---|
Electron configuration | [Rn] 5f11 7s2 |
---|
Electrons per shell | 2, 8, 18, 32, 29, 8, 2 |
---|
|
Phase at STP | 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 |
---|
|
Oxidation states | +2, +3, +4 |
---|
Electronegativity | Pauling scale: 1.3 |
---|
Ionization energies | |
---|
Spectral lines of einsteinium |
|
Natural occurrence | synthetic |
---|
Crystal structure | face-centered cubic (fcc) |
---|
Magnetic ordering | paramagnetic |
---|
CAS Number | 7429-92-7 |
---|
|
Naming | after Albert Einstein |
---|
Discovery | Lawrence Berkeley National Laboratory (1952) |
---|
|
Template:infobox einsteinium isotopes does not exist |
Category: Einsteinium | references |