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Author: langbot
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English[en]
Bohrium is a synthetic chemical element with the symbol Bh and atomic number 107. It is named after Danish physicist Niels Bohr. As a synthetic element, it can be created in a laboratory but is not found in nature. All known isotopes of bohrium are highly radioactive; the most stable known isotope is 270Bh with a half-life of approximately 61 seconds, though the unconfirmed 278Bh may have a longer half-life of about 690 seconds. In the periodic table, it is a d-block transactinide element. It is a member of the 7th period and belongs to the group 7 elements as the fifth member of the 6d series of transition metals. Chemistry experiments have confirmed that bohrium behaves as the heavier homologue to rhenium in group 7. The chemical properties of bohrium are characterized only partly, but they compare well with the chemistry of the other group 7 elements.
Cornish[kw]
Elven gymyk yw bohriom, niver 107 y'n Vosen Beriodek hag onan a'n elvennow treus-fermiom. Henwys yw rag Niels Bohr, fysegydh atomek danek ha gwaynyer an Pewas Nobel rag fysegieth yn 1922. Ev a gesunyas tybieth atomek ha tybieth kwantum. Y furvell gymyk yw Bh. Elven synthesek yw, h.y. nyns yw kevys yn naturel. Pur radyoweythresek yw. Yma tridhek isotop dhe'n elven ma. An isotop a vyw hirra yw bohriom-270, gans hanter bewnans a 61 eylen. Askorrys veu bohriom rag an tro kynsa yn 1983 yn Dubna, Russi gans Yuri Oganessian. Gwrys veu hwegh atom a'n elven yn 2000 dhe wruthyl bohriom oksiklorid. Y tiskwedh an hwithrans ma bos bohriom hevelep dhe reniom.