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hahnium

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.

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Ha - Ha Ha, formerly the suggested symbol for the name hahnium, which was applied variously to two ...

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