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hahnium

   Also found in: Dictionary/thesaurus, Medical, Acronyms, Wikipedia, Hutchinson 0.01 sec.
hahnium (hän`ēəm), symbol Ha, former suggested name for both element 105, now called dubnium dubnium , artificially produced radioactive chemical element; symbol Db; at. no. 105; mass number of most stable isotope 262; m.p., b.p., and sp. gr. unknown; valence +5.
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, and element 108, now called hassium hassium , artificially produced radioactive chemical element; symbol Hs; at. no. 108; mass number of most stable isotope 265; m.p., b.p., sp. gr., and valence unknown.
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hahnium
a name once advanced by the American Chemical Society for a transuranic element, artificially produced from californium, atomic no.: 105; half-life of most stable isotope, 262Ha: 40 seconds

hahnium [′hän·ē·əm]
(chemistry)
The name suggested by workers in the United States for element 105. Symbolized Ha.


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However, after previous experiments on elements 104 and 105--rutherfordium and hahnium (SN: 9/8/90, p.
IUPAC's recommended element names revealed Atomic Voting number Name Symbol in favor(a) 101 Mendelevium Md 20 102 Nobelium No 20 103 Lawrencium Lr 20 104 Dubnium Db 19 105 Joliotium Jl 18 106 Rutherfordium Rf 18 107 Bohrium Bh 20 108 Hahnium Hn 19 109 Meitnerium Mt 20 (a)Voters were the 20 members of the International Union of Pure & Applied Chemistry's Commission on Nomenclature of Inorganic Chemistry.
1998-245: ZERO 4 divs vids, 9 Xian Xina (W2), 13 berm, 20 yilt, 23 blow bowl THREE 4 xlvii EIGHTY 22 ducape Chemical elements Hahnium is element 105.
 
 
 
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