mendelevium

men·de·le·vi·um  (mnd-lv-m)

n. Symbol Md

A synthetic radioactive transuranic element of the actinide series that has known isotopes with mass numbers ranging from 245 to 262. The isotopes with the longest half-lives are Md 258 (51.5 days) and Md 260 (31.8 days). Atomic number 101; melting point 827°C; valence 2,3. See Table at element.

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[After Dmitri Ivanovich Mendeleev.]

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mendelevium [ˌmɛndɪˈliːvɪəm]

n

(Chemistry / Elements & Compounds) a transuranic element artificially produced by bombardment of einsteinium. Symbol: Md; atomic no.: 101; half-life of most stable isotope, ²⁵⁸Md: 60 days (approx.); valency: 2 or 3

[named after Dmitri Ivanovich Mendeleyev (1834-1907), Russian chemist]

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mendelevium  (mnd-lv-m)

Symbol Md

A synthetic, radioactive metallic element of the actinide series that is produced by bombarding einsteinium with helium ions. Its most stable isotope is Md 258 with a half-life of approximately 51.5 days. Atomic number 101. See Periodic Table.

Thesaurus

Noun

1.

mendelevium - a radioactive transuranic element synthesized by bombarding einsteinium with alpha particles (Md is the current symbol for mendelevium but Mv was formerly the symbol) atomic number 101, Md, Mv chemical element, element - any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter

Translations

mendelevium [ˌmendɪˈliːvɪəm] N → mendelevio m