a radioactive, metallic chemical element, one of the actinides, produced by bombarding einsteinium with high-energy alpha particles in a cyclotron: symbol, Md; at. no. 101
Origin of mendeleviumModL: named in honor of Mendeleev by its United States discoverers
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 Periodic Table.
Origin of mendeleviumAfterDmitri Ivanovich Mendeleev
- A transuranic chemical element (symbol Md, formerly Mv) with atomic number 101.