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osmium    音标拼音: ['ɑzmiəm]
n. 锇

锇

osmium
n 1: a hard brittle blue-grey or blue-black metallic element
that is one of the platinum metals; the heaviest metal
known [synonym: {osmium}, {Os}, {atomic number 76}]

osmium \os"mi*um\ ([o^]z"m[i^]*[u^]m), n. [Gr. 'osmh` a smell,
odor, akin to 'o`zein to smell. So named in allusion to the
strong chlorinelike odor of osmic tetroxide. See {Odor}.]
(Chem.)
A rare metallic element of the platinum group with atomic
number 76. It is found native as an alloy in platinum ore,
and in iridosmine. It is a hard, infusible, bluish or grayish
white metal, and the heaviest substance known. Its tetroxide
is used in histological experiments to stain tissues. Symbol
{Os}. Atomic weight 190.2. Specific gravity 22.477.
[1913 Webster PJC]


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  • Osmium - Wikipedia
    Osmium is a hard but brittle metal that remains lustrous even at high temperatures It has a very low compressibility Correspondingly, its bulk modulus is extremely high, reported between 395 and 462 GPa, which rivals that of diamond (443 GPa)
  • Osmium | Definition, Properties, Uses, Facts | Britannica
    Osmium, chemical element, one of the platinum metals of the periodic table and the densest naturally occurring element A gray-white metal, osmium is very hard, brittle, and difficult to work, even at high temperatures Pure osmium metal does not occur in nature
  • Osmium - Element information, properties and uses | Periodic . . .
    Osmium occurs uncombined in nature and also in the mineral osmiridium (an alloy with iridium) Most osmium is obtained commercially from the wastes of nickel refining
  • OSMIUM Secure Purchase - Certified
    Here you can buy OSMIUM - the rarest of all precious metals - online Besides classic bars, you can also buy custom crystalline osmium 2D shapes
  • Osmium Facts – Element 76 Symbol Os - Science Notes and . . .
    Osmium is an extremely hard and dense metallic element with symbol Os and atomic number 76 Although it is a rare element, you encounter it in daily life in ballpoint pens and electrical contacts
  • Osmium Facts, Symbol, Discovery, Properties, Uses
    Osmium (pronounced as OZ-mee-em) belongs to the family of transition metals and denoted by the chemical symbol Os It has thirty-four isotopes out of which seven occur naturally with osmium-92 having an abundance of 40 78% in the earth’s crust [1, 3]
  • Osmium: The Rarest Precious Metal Explained—Why Collectors . . .
    Osmium is the rarest and densest naturally occurring precious metal, with global annual production of less than 1 ton, making it far scarcer than gold or platinum





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