Unnilhexium

2 definitions found

From WordNet (r) 2.0 [wn]:

  unnilhexium
       n : a transuranic element [syn: {Unh}, {element 106}, {atomic
           number 106}]

From Elements database 20001107 [elements]:



  unnilhexium
  Symbol:
  Atomic number: 106
  Atomic weight: (263)
  Half-life of 0.9 +/- 0.2 s. Discovered by the Joint Institute for Nuclear
  Research at Dubna (U.S.S.R.) in June of 1974. Its existence was confirmed
  by the Lawrence Berkeley Laboratory and Livermore National Laboratory in
  September of 1974.