Template:Infobox einsteinium

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Einsteinium,  99Es
Template:Infobox element/symbol-to-top-image-alt
General properties
PronunciationTemplate:Infobox element/pronunciation
Appearancesilvery; glows blue in the dark
Standard atomic weight (Ar, standard)Template:Infobox element/standard atomic weight
Mass numberTemplate:Infobox element/symbol-to-most-stable-isotope (most stable isotope)
Einsteinium in the periodic table
Template:Infobox element/periodic table
Atomic number (Z)99
GroupTemplate:Infobox element/group
Periodperiod 7
Blockf-block
Element categoryTemplate:Infobox element/category format
Electron configuration[Rn] 5f11 7s2
Electrons per shell
2, 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 statesTemplate:Infobox element/symbol-to-oxidation-state
ElectronegativityPauling scale: 1.3
[[Ionization energy|Template:Engvar energies]]
  • 1st: 619 kJ/mol
Template:Infobox element/spectral lines
Other properties
Crystal structureTemplate:Infobox element/crystal structure
Magnetic orderingparamagnetic
CAS Number7429-92-7
History
Namingafter Albert Einstein
DiscoveryLawrence Berkeley National Laboratory (1952)
Main isotopes of einsteinium
Template:Infobox element/isotopes table
| references

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