鋨 (é) - Osmium — a chemical element (symbol Os, atomic

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Osmium — a chemical element (symbol Os, atomic number 76), a hard, brittle, bluish-white transition metal in the platinum group, known for being the densest naturally occurring element.

Osmium — a chemical element (symbol Os, atomic

Usage highlights

osmium metalosmium tetroxideosmium alloyosmium compoundosmium catalystosmium isotope

Synonyms

  • 锇— Simplified Chinese form of osmium

Usage & contexts

Examples

  • Osmium is the densest stable element (最稠密的稳定元素).
  • This alloy contains osmium (含有鋨).
  • Osmium tetroxide is highly toxic (四氧化鋨有剧毒).
  • The pen nib is tipped with an osmium alloy (笔尖镀有鋨合金).

Collocations

  • osmium metal(金属鋨)
  • osmium tetroxide(四氧化鋨)
  • osmium alloy(鋨合金)
  • osmium compound(鋨化合物)
  • osmium catalyst(鋨催化剂)
  • osmium isotope(鋨同位素)

Cultural background

FAQ
  • Osmium was discovered in 1803 by English chemist Smithson Tennant in the residue left when crude platinum is dissolved in aqua regia.
  • The name 'osmium' derives from the Greek word 'osme', meaning 'smell', due to the pungent odor of its volatile oxide, osmium tetroxide.
  • Due to its extreme density and hardness, osmium is used in applications where extreme durability is required, such as fountain pen tips, electrical contacts, and instrument pivots.

FAQ