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Thorium dioxide (ThO2), also called thorium(IV) oxide, is a crystalline solid, often white or yellow in colour. Also known as thoria, it is produced mainly as a by-product of lanthanide and uranium production. Thorianite is the name of the mineralogical form of thorium dioxide. It is moderately rare and crystallizes in an isometric system. The melting point of thorium oxide is 3300 °C – the highest of all known oxides. Only a few elements (including tungsten and carbon) and a few compounds (including tantalum carbide) have higher melting points. All thorium compounds, including the dioxide, are radioactive because there are no stable isotopes of thorium.

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rdf:type
rdfs:label
  • ثاني أكسيد الثوريوم (ar)
  • Oxid thoričitý (cs)
  • Thorium(IV)-oxid (de)
  • Dióxido de torio (es)
  • Torium dioksida (in)
  • Diossido di torio (it)
  • Dioxyde de thorium (fr)
  • 이산화 토륨 (ko)
  • 酸化トリウム(IV) (ja)
  • Thorium dioxide (en)
  • Оксид тория(IV) (ru)
  • 二氧化钍 (zh)
rdfs:comment
  • ثاني أكسيد الثوريوم (بالإنجليزية: Thorium dioxide)‏ وصيغته الكيميائية ThO2، ويُعرف بالثوريا، هو مركبٌ بلوري صلب، يكون عادةً أبيضًا أو أصفرًا في اللون. يُنتج بشكل رئيسي كمركبٍ جانبي من اللانثانيدات واليورانيوم. (ar)
  • Oxid thoričitý je jedním z oxidů thoria. Thorium je zde v oxidačním čísle IV. Vzniká jako vedlejší produkt při výrobě lanthanoidů a uranu. V přírodě se vyskytuje v podobě vzácného nerostu . Používá se jako jaderné palivo. (cs)
  • Thorium(IV)-oxid (auch Thoriumdioxid und kurz ThO2) ist das einzige stabile Oxid des radioaktiven Elements und Actinoids Thorium. In der Natur kommt die Verbindung als Mineral Thorianit vor. (de)
  • Le dioxyde de thorium est un composé chimique de formule ThO2. Il se présente comme une poudre cristalline blanche, jadis connue sous le nom de thoria ou thorina. Il s'agit essentiellement d'un sous-produit de la production d'uranium et des lanthanides. La thorianite en est la forme minérale, relativement rare. Le nitrate de thorium Th(NO3)4 est un intermédiaire dans sa production. (fr)
  • Torium dioksida (ThO2), juga disebut torium(IV) oksida, adalah sebuah padatan kristal, kebanyakan berwarna putih atau kuning. Juga dikenal sebagai thoria, Torium dioksida kebanyakan diproduksi sebagai sebuah hasil sampingan dari pembuatan dan uranium. Torianit adalah nama bentuk mineral torium dioksida. Oksida tersebut cukup langka dan mengkristal dalam sistem isometris. Titik lebur torium oksida adalah 3300 °C – tertinggi dari semua oksida yang dikenal. Hanya beberapa elemen (termasuk tungsten dan karbon) dan beberapa senyawa (termasuk ) yang mempunyai titik lebur lebhi tinggi. (in)
  • Il biossido di torio (ThO2) è l'ossido del torio (IV); si presenta come un solido bianco o giallo e, come tutti i composti del torio, è radioattivo. Viene ottenuto come sottoprodotto nella produzione di uranio, in particolare dalla . Il biossido di torio è uno degli ossidi a maggior punto di fusione (3390 °C). Ad altissime temperature il biossido di torio si riduce a (ThO). (it)
  • Thorium dioxide (ThO2), also called thorium(IV) oxide, is a crystalline solid, often white or yellow in colour. Also known as thoria, it is produced mainly as a by-product of lanthanide and uranium production. Thorianite is the name of the mineralogical form of thorium dioxide. It is moderately rare and crystallizes in an isometric system. The melting point of thorium oxide is 3300 °C – the highest of all known oxides. Only a few elements (including tungsten and carbon) and a few compounds (including tantalum carbide) have higher melting points. All thorium compounds, including the dioxide, are radioactive because there are no stable isotopes of thorium. (en)
  • 酸化トリウム(IV)(さんかトリウム よん。英語: thorium(IV) oxide)は、化学式がThO2と表されるトリウムの酸化物である。 (ja)
  • 이산화 토륨(화학식:ThO2)은 산화 토륨(IV)로도 불리며 하얀 가루 결정체로 존재한다. 주로 란탄족과 우라늄의 부산물로서 생산된다. 이산화 토륨의 광물학적인 형태이다. 약간 희귀한편이며, 결정체를 이룬다. 녹는 점은 3390 °C로, 알려진 산화물중에서 가장 높다. 오직 몇몇 원소와 그 화합물만이 녹는점이 이보다 더 높다. (ko)
  • Окси́д то́рия(IV) — бинарное неорганическое соединение металла тория и кислорода с формулой ThO2, бесцветные кристаллы, нерастворимые в воде. (ru)
  • 二氧化钍,别名氧化钍,化学式ThO2。 (zh)
  • El dióxido de torio (óxido de torio (IV)), es un óxido de torio que tiene fórmula química ThO2. Es un sólido cristalino, a menudo de color blanco o amarillo. Se produce principalmente como un subproducto de la producción de lantánidos y uranio.​ (es)
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  • Thorium dioxide (en)
name
  • Thorium dioxide (en)
foaf:depiction
  • http://commons.wikimedia.org/wiki/Special:FilePath/Fluorite-unit-cell-3D-ionic.png
  • http://commons.wikimedia.org/wiki/Special:FilePath/Yellowing_of_thorium_lenses.jpg
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