Template:Infobox einsteinium

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[[Category:Template:Pagetype with short description]]

Einsteinium, 99Es
Quartz vial (9 mm diameter) containing ~300 micrograms of solid 253Es. The illumination produced is a result of the intense radiation from 253Es.
Einsteinium
Pronunciation/nˈstniəm/ (Template:Respell)
Appearancesilvery; glows blue in the dark
Mass number[252]
Einsteinium in the periodic table
Template:Periodic table (32 columns, micro) Ho

Es

(Upt)
californiumeinsteiniumfermium
Atomic number (Z)99
Groupgroup n/a
Periodperiod 7
Block  f-block
Electron configuration[Rn] 5f11 7s2
Electrons per shell2, 8, 18, 32, 29, 8, 2
Physical properties
Phase at STPsolid
Melting point1133 K ​(860 °C, ​1580 °F)
Boiling point1269 K ​(996 °C, ​1825 °F) (estimated)
Density (near r.t.)8.84 g/cm3
Atomic properties
Oxidation states+2, +3, +4
ElectronegativityPauling scale: 1.3
Ionization energies
  • 1st: 619 kJ/mol
Color lines in a spectral range
Spectral lines of einsteinium
Other properties
Natural occurrencesynthetic
Crystal structureface-centered cubic (fcc)
Face-centered cubic crystal structure for einsteinium
Magnetic orderingparamagnetic
CAS Number7429-92-7
History
Namingafter Albert Einstein
DiscoveryLawrence Berkeley National Laboratory (1952)
Main isotopes of einsteinium
[[Isotope|IsoTemplate:Shytope]] [[Natural abundance|AbunTemplate:Shydance]] Half-life (t1/2) Decay mode [[Decay product|ProTemplate:Shyduct]]
252Es syn 471.7 d α 248Bk
ε 252Cf
β 252Fm
253Es syn 20.47 d SF
α 249Bk
254Es syn 275.7 d ε 254Cf
β 254Fm
α 250Bk
255Es syn 39.8 d β 255Fm
α 251Bk
SF
Category Category: Einsteinium
| references

[[Category:Infobox templates|Template:Remove first word]]

data m.p. cat
in calc from C diff report ref
C 860
K 1133 1130 3 delta
F 1580 1580 0 Template:Subpage other
max precision 0
WD Template:Wikidata Script error: No such module "EditAtWikidata". Template:Wikidata
input C: 860, K: 1133, F: 1580
comment
data b.p. cat
in calc from C diff report ref
C 996
K 1269 1269 0
F 1825 1825 0 Template:Subpage other
max precision 0
WD Template:Wikidata Script error: No such module "EditAtWikidata". Template:Wikidata
input C: 996, K: 1269, F: 1825
comment (estimated)
Cf ←

i'box Cf

iso
99
Es (E)
→ Fm

i'box Fm

  Data sets read by {{Infobox element}}
Name and identifiers
Top image (caption, alt)
Pronunciation
Category (enwiki)
Standard atomic weight
  most stable isotope
Natural occurrence
Phase at STP
Oxidation states
Spectral lines image
Electron configuration (cmt, ref)
Term symbol * (cmt, ref)
Wikidata *
* Not used in {{Infobox element}} (2019-02-03)
See also {{Infobox element/symbol-to--navbox}}

References

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