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Related to hahnium: dubnium
Name proposed for the artificially made element 105 now called dubnium.
[Otto Hahn, Ger. scientist, 1879–1968]Ha
Name proposed for the artificially made element 105. An IUPAC decision of 1997 named this element Dubnium.
CAS # 53850-35-4
a chemical element, atomic number 105, atomic weight 260, symbol Ha. See Table 6.