hahnium (hänˈēəm) [key], symbol Ha, former suggested name for both element 105, now called dubnium, and element 108, now called hassium.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.
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 ...
- Encyclopedia: Compounds and Elements - Encyclopeadia articles concerning Compounds and Elements.