Einsteinium
Chemical, physical and material properties and data of the chemical element Einsteinium.
General Information about Einsteinium
Regular nameEinsteiniumChemical symbolEsOther namesSystematic nameHistorical namesName meaning, originDiscovery (year)OccurencePosition in the PSEGroup membership
Atomar Properties of Einsteinium
Atomic number Z99 = number of protonsStandard Atomic Weight252.082979905
Electron configuration of Einsteinium
| 1s | 2s | 2p | 3s | 3p | 3d | 4s | 4p | 4d | 4f | 5s | 5p | 5d | 5f | 6s | 6p | 6d | 6f | 7s | 7p |
|---|
| 2 | 2 | 6 | 2 | 6 | 10 | 2 | 6 | 10 | 14 | 2 | 6 | 10 | 11 | 2 | 6 | | | 2 | |
Abbreviated form: [Rn] 5f11 7s2 .
Ionization Energies of Einsteinium
The following table lists the ionization energies IE (ionization potentials); the IE is the energy required in electron volts (eV) per atom to separate a given electron from an Einsteinium atom.
Isotopic Data of Einsteinium
An overview of the nuclides as well as the isotopic data and properties are listed on the following page: Einsteinium isotopes.
Chemistry of Einsteinium
Oxidation states+ 3Electronegativity1.3 (Pauling original)
1.30 (Pauling)Electron affinity-0.3 eV
-28.6 kJ mol-1
Material and Physical Properties
Melting point860 °CBoiling point996 °CDensity8.84 g cm-3
External Data, Identifiers
CAS registry number7429-92-7InChI =1S/EsInChIKeyCKBRQZNRCSJHFT-UHFFFAOYSA-NPubChem ID23913
Last update: 2022-12-12
Perma link: https://www.chemlin.org/chemical-elements/einsteinium.php
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