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a synthetic chemical element, element 110 of the periodic chart (Ds) in the same group as nickel, palladium, and platinum
1984; formerly ununnilium or Eka-Platinum
A synthetic radioactive element, first produced by bombarding lead atoms with nickel atoms. The isotope first synthesized has a mass number of 269 and a half-life of 0.18 milliseconds. Atomic number 110. See Periodic Table.