Unnilseptium
[yoo-nil-sep-tee-uh m] /ˌyu nɪlˈsɛp ti əm/
noun, Chemistry, Physics.
1.
former name of bohrium. Symbol: Uns.
noun, Chemistry, Physics.
1.
a superheavy, synthetic, radioactive element with a very short half-life. Symbol: Bh; atomic number: 107.
noun, Chemistry, Physics.
1.
bohrium.
noun
1.
a transuranic element artificially produced in minute quantities by bombarding 204Bi atoms with 54Cr nuclei. Symbol: Bh; atomic no: 107 Former names element 107, unnilseptium
bohrium
(bôr’ē-əm)
Symbol Bh
A synthetic, radioactive element that is produced by bombarding bismuth with chromium ions. Its most long-lived isotopes have mass numbers of 261, 262, and 264 with half-lives of 11.8 milliseconds, 0.1 second, and 0.44 second, respectively. Atomic number 107. See Periodic Table.
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