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/ˌmɛn.dəˈliː.vi.əm/ · noun
(chemistry) A radioactive metallic transuranic chemical element (symbol Md) with atomic number 101, which is artificially produced in a particle accelerator..
Mendelevium, the heaviest and rarest form of matter known, has been produced in the University of California's cyclotron. Identity based on only 17 atoms of new element [subtitle]. […] Mendelevium is intensely radioactive, decaying by spontaneous fission. Its half-life is between a half hour and three hours. It has chemical properties similar to those of thulium, element 69, a rare earth.
There's sulfur, californium, and fermium, berkelium, / And also mendelevium, einsteinium, nobelium, / And argon, krypton, neon, radon, xenon, zinc, and rhodium, / And chlorine, carbon, cobalt, copper, tungsten, tin, and sodium.
Seven new elements were discovered with the 60-inch cyclotron: 85 (astatine), 93 (neptunium), 94 (plutonium), 96 (curium), 97 (berkelium), 98 (californium), and 101 (mendeleevium).
In the expert hands of Enrico Fermi, beginning with 1934, neutron bombardment produced new atomic miracles. In 1940, Fermi created neptunium (Z = 93), the first artificial, 'trans-uranic', element. Others, also unstable, soon followed, among them fermium (Z = 100) and mendeleyevium (Z = 101).
[Glenn Theodore] Seaborg would be the principal co-discoverer of ten elements on the periodic table: plutonium, americium, curium, berkelium, californium, einsteinium, fermium, mendelevium, nobelium, and element 106.
Use mendelevium when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Mendelevium means (chemistry) A radioactive metallic transuranic chemical element (symbol Md) with atomic number 101, which is artificially produced in a particle accelerator..
Common synonyms include Md, Mv, unnilunium, mv.
The opposite depends on the specific sense.
Mendelevium, the heaviest and rarest form of matter known, has been produced in the University of California's cyclotron. Identity based on only 17 atoms of new element [subtitle]. […] Mendelevium is intensely radioactive, decaying by spontaneous fission. Its half-life is between a half hour and three hours. It has chemical properties similar to those of thulium, element 69, a rare earth.
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