Livermorium (Lv)

Isotopes of Livermorium

Isotope Atomic Mass Half-life Mode of Decay
Lv-290 290 0.029 seconds α to Fl-286
Lv-292 292 0.0525 seconds α to Fl-288


Livermorium is the synthetic superheavy element with the symbol Lv and atomic number 116. It was discovered in 2000 by workers from the Joint Institute for Nuclear Research in Dubna, Russian Federation. It was named for the Lawrence Livermore National Laboratory in Livermore, California, USA.

Since then, about 35 atoms of livermorium have been produced, either directly or as a decay product of ununoctium. An isotope, Livermorium-292, was identified in the reaction of Curium-248 with Calcium-48. It is very short-lived and decomposes to a known isotope of element 114.

Properties of Livermorium

Name Livermorium
Symbol Lv
Atomic number 116
Atomic weight [293]
Standard state Presumably a solid at 298 °K
CAS Registry ID 54100-71-9
Group in periodic table 16
Group name Chalcogen
Period in periodic table 7
Block in periodic table p-block
Color Unknown, but probably metallic and silvery white or grey in appearance
Classification Metallic
Melting point 364–507 °C (extrapolated)
Boiling point 762-862 °C (extrapolated)
Heat of fusion

7.61 (extrapolated) kJ·mol-1

Heat of vaporization

42 (predicted) kJ·mol-1

Density of solid 11.2 g/cm3 (predicted)
Ground level electron configuration [Rn]5f146d107s27p4 (predicted)

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