dubnium(redirected from Eka-tantalum)
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An artificial transplutonium element; atomic number 105; atomic weight 262 [Formerly called Unnilpentium, Unp; and Joliotium, after the French physicist F. Joliot-Curie.]
Etymology: Joint Institute for Nuclear Research at Dubna, Russia
a transuranic element. Its atomic number is 105; the mass of its best-known isotope is 260. It is produced by an induced nuclear reaction. Also called element 105. Formerly called hahnium.
dubnium(doob′nē-ŭm, dŭb′) [ Dubna, Russia],
A synthetic radioactive element; atomic mass 268; atomic number 105.
CAS # 54850-35-4