bohrium
bohrium (symbol Bh) Synthetic, radioactive, element of the transactinide series. It is very unstable, and few atoms have ever been detected. Its discovery was made by German physicists Peter Armbruster and Gottfried Münzenberg and collegues by bombarding bismuth-209 nuclei with chromium-54 nuclei. It is named after Danish physicist Niels Bohr. Properties: at.no. 107.
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bohrium