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dubnium
(redirected from Joliotium)

    Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia, Hutchinson 0.07 sec.
dub·ni·um (dbn-m)
n. Symbol Db
A radioactive synthetic element whose longest-lived isotopes have mass numbers of 258, 261, 262, and 263 with half-lives of 4.2, 1.8, 34, and 30 seconds. Atomic number 105.


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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
Elemental upset by Science News
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