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meitnerium
[ mahyt-nur-ee-uhm ]
noun
, Chemistry, Physics.
- a superheavy, synthetic, radioactive element with a very short half-life. : Mt; : 109.
meitnerium
/ ˈmaɪtnɪərɪəm /
noun
- a synthetic element produced in small quantities by high-energy ion bombardment. Symbol: Mt; atomic no: 109
meitnerium
/ mīt-nûr′ē-əm /
- A synthetic, radioactive element that is produced by bombarding bismuth with iron ions. Its most long-lived isotopes have mass numbers of 266 and 268 with half-lives of 3.4 milliseconds and 70 milliseconds, respectively. Atomic number 109.
- See Periodic Table
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Word History and Origins
Origin of meitnerium1
First recorded in 1975–80; officially assigned to element 109 in 1997; named after Austrian physicist Lise Meitner; -ium ( def )
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Word History and Origins
Origin of meitnerium1
C20: named after Lise Meitner
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