Properties

CAS Number87658-56-8
PubChem CIDna
Atomic Radius-
Atomic Volume-
Atomic Weight[294]
Blockp
Boiling Point-
Bulk Modulus
CategoryHalogens
Crystal Structure
Color
Covalent Radius165
Density-
Electrical Resistivity
Electron Configuration[Rn] 5f14 6d10 7s2 7p5
Electrons per shell2, 8, 18, 32, 32, 18, 7
Electronegativity-
Electrons117
Group17
Heat of Fusionna
Heat of Vaporizationna
Ionization Potential-
Magnetic Ordering
Magnetic Susceptibility
Mass[294]
Mass Number117
Melting Point-
NameTennessine
Neutrons177
Atomic Number294
Oxidation States-1, 1, 3, 5
Period7
PhaseSolid
Poisson Ratio
Protons117
Shear Modulus
Specific Heat Capacity-
SymbolTs
Thermal Conductivity-
Van der Waals radius
Young's Modulus
Abundance
Abundance in Earth's crustna
Abundance in Universena
Ts Tennessine 117 (294) 17 7 p 117 [Rn] 5f14 6d10 7s2 7p5 2 8 18 32 32 18 7 None 1 50 ms 72.ms Synthetic tvkyB99vFaI Tennessine
Einsteinium was discovered as a component of the debris of the first hydrogen bomb explosion in 1952.

It was identified by Albert Ghiorso and co-workers at the University of California, Berkeley in collaboration with the Argonne and Los Alamos National Laboratories, in the fallout from the Ivy Mike nuclear test.

The new element was produced by the nuclear explosion in miniscule amounts by the addition of 15 neutrons to uranium-238. Named after Albert Einstein 117 Temporary systematic IUPAC nomenclature

Isotopes of Einsteinium

Standard Atomic Weight

Stable Isotopes

Unstable Isotopes

291Uus 292Uus

Einsteinium is harmful due to its radioactivity
Einsteinium is the first divalent metal in the actinide series
Einsteinium is mainly used for scientific research purposes.

The rare isotope einsteinium-254 is favored for production of ultraheavy elements.

Einsteinium-254 was used as the calibration marker in the chemical analysis spectrometer of the Surveyor 5 lunar probe.