Berkelium

Radioactive element
Latin nameBerkelium
English nameBerkelium
chemickal symbolBk
atomic number97
relative atomic mass(247,0703)
period7
groupIII.B
classificationactinides
discovery year1949
discovererThompson, Ghiorso,
Seaborg
melting point [°C]1050
boiling point [°C]N/A
density [g cm-3]14,78
electronegativity [Pauling]1,3
oxidation statesIII, IV
electron configuration[Rn]5f9 7s2
1. ionizing potential [eV]6,23
state at normal conditionssolid

Berkelium is an artificial radioactive metallic element. In nature not occur. Practical use is only for scientific research.