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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 (from Ancient Greek ὀσμή (osmḗ) 'smell') is a chemical element; it has symbol Os and atomic number 76 It is a hard, brittle, bluish-white transition metal in the platinum group Osmium has the highest density of any stable element and one of the lowest abundances in the Earth's crust
  • 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: The Rarest Precious Metal Explained—Why Collectors And . . .
    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
  • Osmium - Element information, properties and uses | Periodic Table
    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
  • What is osmium (Os)? An overview of the rarest and densest precious . . .
    What is osmium? What is it used for? How dense is it? Everything about the densest precious metal — from properties and forms to jewelry and industrial applications
  • Osmium Flag Ship Jewellery Store – Oslery GmbH
    Osmium is the rarest and most valuable precious metal on Earth, significantly scarcer than gold, platinum, or diamonds Due to its rarity and unique properties, osmium is gaining traction as a high-value asset in the precious metals market
  • Osmium Facts - Element 76 Symbol Os - Science Notes and Projects
    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 metal 99. 95% — Luciteria
    Even though the title of rarest stable, naturally occurring metal on earth is a debated topic among geologists osmium always gets top contender status with some estimates putting it at just one part in 20 billion of the earth's crust
  • Osmium: Properties, Uses, and Applications - Comprehensive Guide
    Explore the unique properties and applications of osmium, the densest naturally occurring element Learn about its industrial uses, potential medical applications, chemical characteristics, and safety guidelines
  • 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]





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