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hahnium

hahnium (hän'ēum) [key], symbol Ha, former suggested name for both element 105, now called dubnium, and element 108, now called hassium.

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More on hahnium from Fact Monster:

  • Ha - Ha Ha, formerly the suggested symbol for the name hahnium, which was applied variously to two ...
  • hassium - hassium hassium , artificially produced radioactive chemical element; symbol Hs; at. no. 108; mass ...
  • dubnium - dubnium dubnium , artificially produced radioactive chemical element; symbol Db; at. no. 105; mass ...
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