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Chemical compounds
Many compounds of thorium are known: this is because thorium and uranium are the most stable and accessible actinides and are the only actinides that
Thorium_compounds
Chemical element with atomic number 90 (Th)
Thorium is a chemical element; it has symbol Th and atomic number 90. Thorium is a weakly radioactive light silver metal which tarnishes olive grey when
Thorium
Chemical compound
tungsten and carbon) and a few compounds (including tantalum carbide) have higher melting points. All thorium compounds, including the dioxide, are radioactive
Thorium_dioxide
Chemical compound
Th(l) ⇌ 2 ThO(s) ThO2 → ThO(s) + ½ O2 Stoll, Wolfgang (2011). "Thorium and Thorium Compounds". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim:
Thorium_monoxide
Chemical compound
Thorium trichloride is a binary inorganic compound of thorium metal and chlorine with the chemical formula ThCl3. The compound can be prepared by reducing
Thorium_trichloride
Chemical compound
Thorium disilicide is a binary inorganic chemical compound of thorium and silicon. The compound was first described in detail in 1942 by Georg Brauer
Thorium_disilicide
Chemical compound
"Preparation of highly pure thorium nitrate via thorium sulfate and thorium peroxide". Journal of Alloys and Compounds. 2001. 323–324: 53–56. doi:10
Thorium(IV)_sulfate
Chemical compound
Thorium dicarbide is an inorganic compound with the chemical formula ThC2. Thorium dicarbide can be produced by reacting metal thorium and graphite at
Thorium_dicarbide
Chemical compound
Thorium(IV) fluoride (ThF4) is an inorganic chemical compound. It is a white hygroscopic powder which can be produced by reacting thorium with fluorine
Thorium(IV)_fluoride
F-block chemical elements
aqueous solutions. Thorium is rather active chemically. Owing to lack of electrons on 6d and 5f orbitals, tetravalent thorium compounds are colorless. At
Actinide
Chemical compound
Thorium heptaphosphide is a binary inorganic compound of thorium metal and phosphorus with the chemical formula ThP7. This is the most phosphorus-rich
Thorium_heptaphosphide
Chemical compound
Thorium(IV) nitrate is a chemical compound, a salt of thorium and nitric acid with the formula Th(NO3)4. A white solid in its anhydrous form, it can form
Thorium(IV)_nitrate
Inorganic compound
Thorium(IV) carbide (ThC) is an inorganic thorium compound and a carbide. NIST Standard Reference Data (2021). "Thorium carbide". webbook.nist.gov. Retrieved
Thorium(IV)_carbide
Chemical compound
Thorium(IV) hydroxide is an inorganic compound with a chemical formula Th(OH)4. Thorium(IV) hydroxide can be produced by reacting alkali metal hydroxides
Thorium(IV)_hydroxide
Index of chemical compounds with the same name
Thorium oxide may refer to: Thorium monoxide (thorium(II) oxide), ThO Thorium dioxide (thorium(IV) oxide), ThO2 This set index article lists chemical compounds
Thorium_oxide
Chemical compound
Thorium dichloride is a binary inorganic compound of thorium metal and chloride with the chemical formula ThCl2. Th-metal is dissolved in alkali chloride
Thorium_dichloride
Chemical compound
Thorium triiodide is a binary inorganic compound of thorium metal and iodine with the chemical formula ThI3. Th metal is heated with ThI4 in a vacuum
Thorium_triiodide
Chemical compound
and USi. Wedemeyer, Horst (1993). "Compounds of Thorium with Silicon". Th Thorium Supplement Volume C 8: Compounds with Si, P, As, Sb, Bi, and Ge. Springer
Thorium_monosilicide
Chemical compound
organoarsenic compound. It can be used as an indicator in the determination of barium, beryllium, lithium, uranium and thorium compounds. Being a compound of arsenic
Thorin_(chemistry)
Chemical compound
Thorium(IV) chloride describes a family of inorganic compounds with the formula ThCl4(H2O)n. Both the anhydrous and tetrahydrate (n = 4) forms are known
Thorium(IV)_chloride
Chemical compound
Thorium trifluoride is a binary inorganic compound of thorium metal and fluorine with the chemical formula ThF3. Thorium trifluoride is not formed in a
Thorium_trifluoride
Chemical compound
Thorium diselenide is an inorganic compound with the chemical formula ThSe2. It is one of the selenides of thorium. It was first obtained in 1896 through
Thorium_diselenide
Index of chemical compounds with the same name
Thorium iodide may refer to: Thorium(II) iodide (thorium diiodide), ThI2 Thorium(III) iodide (thorium triiodide), ThI3 Thorium(IV) iodide (thorium tetraiodide)
Thorium_iodide
Chemical compound
Thorium difluoride is a binary inorganic compound of thorium metal and fluorine with the chemical formula ThF2. Thorium difluoride has been detected mass
Thorium_difluoride
Chemical compound
Thorium diiodide is an iodide of thorium, with the chemical formula of ThI2. It is an electride with the ionic formula Th4+(I−)2e−2. It is air-sensitive
Thorium_diiodide
Chemical element with atomic number 74 (W)
number 74. It is a metal found naturally on Earth almost exclusively in compounds with other elements. It was identified as a distinct element in 1781 and
Tungsten
Contrast agent for imaging, no longer used clinically
Thorium compounds produce excellent images because of thorium's high opacity to X-rays (it has a high cross section for absorption). However, thorium
Thorotrast
Chemical element with atomic number 17 (Cl)
manufacture of organic compounds, and 18% in the manufacture of inorganic chlorine compounds. About 15,000 chlorine compounds are used commercially. The
Chlorine
Chemical element with atomic number 88 (Ra)
Imaging. 59 (4): 420–438. PMID 26222274. Stoll, Wolfgang (2005). "Thorium and Thorium Compounds". Ullmann's Encyclopedia of Industrial Chemistry. Wiley-VCH
Radium
Chemical element with atomic number 80 (Hg)
compounds are always divalent and usually two-coordinate and linear geometry. Unlike organocadmium and organozinc compounds, organomercury compounds do
Mercury_(element)
Chemical element with atomic number 92 (U)
to 5%. However, soluble uranium compounds tend to quickly pass through the body, whereas insoluble uranium compounds, especially when inhaled by way of
Uranium
Chemical element with atomic number 15 (P)
organic compounds containing the phosphate ion PO3−4 as a functional group. These include DNA, RNA, ATP, and phospholipids, complex compounds fundamental
Phosphorus
their compounds comprise a significant portion of the Earth's crust. There is enough thorium and uranium to be commercially mined, with thorium having
Actinides_in_the_environment
Company
mantles, luminescence, rare earths, radioactivity, and uranium and thorium compounds. In 1934, the corporation was acquired by the German corporation Degussa
Auergesellschaft
Chemical compound
Thorium(IV) selenate is an inorganic compound with the chemical formula Th(SeO4)2. It exists in the octahydrate form and as a basic salt. Thorium(IV)
Thorium(IV)_selenate
Mineral containing rare-earth elements
(11th ed.). Cambridge University Press. p. 692. Wolfgang Stoll "Thorium and Thorium Compounds" Ullmann's Encyclopedia of Industrial Chemistry 2012 Wiley-VCH
Monazite
Chemical element with atomic number 50 (Sn)
chemical compounds with tin–carbon bonds. Of the tin compounds, the organic derivatives are commercially the most useful. Some organotin compounds are highly
Tin
Chemical element with atomic number 55 (Cs)
or tungsten. It forms well-defined intermetallic compounds with antimony, gallium, indium, and thorium, which are photosensitive. It mixes with all the
Caesium
Chemical element with atomic number 86 (Rn)
variations when trying to measure radiation from thorium oxide. Rutherford noticed that the compounds of thorium continuously emit a radioactive gas that remains
Radon
Chemical compound
Thorium(IV) bromide is an inorganic compound, with the chemical formula of ThBr4. Thorium(IV) bromide can be obtained by reacting thorium dioxide, bromine
Thorium(IV)_bromide
Chemical compound
Thorium oxalate is the inorganic compound with the formula Th(C2O4)2(H2O)4. It is a white insoluble solid prepared by the reaction of thorium(IV) salts
Thorium_oxalate
Chemical element with atomic number 19 (K)
for some ion-binding antibiotics. Potassium forms many binary compounds, i.e., compounds of potassium and one other element. The inventory is so extensive
Potassium
Chemical element with atomic number 91 (Pa)
display different physical and chemical properties. Thorium and protactinium, but not uranium compounds, are poorly soluble in aqueous solutions and precipitate
Protactinium
Chemical compound
Thorium oxyfluoride is an inorganic compound of thorium metal, fluorine, and oxygen with the chemical formula ThOF 2. Thorium oxyfluoride can be prepared
Thorium_oxyfluoride
Chemical element with atomic number 25 (Mn)
the oxides can adsorb organic acids and other compounds. The adsorption of the metals and organic compounds can then cause them to be oxidized while the
Manganese
Private Danish company developing molten salt technology
the use of thorium in nuclear technology, aiming to develop domestic production of thorium compounds. Turkey has large reserves of thorium, as of 2026
Copenhagen_Atomics
Chemical compound
Thorium(IV) sulfide (ThS2) is an inorganic chemical compound composed of one thorium atom ionically bonded to two atoms of sulfur. This salt is dark brown
Thorium(IV)_sulfide
Study of chemical compounds containing actinide-carbon bonds
organoactinide compounds, which are organometallic compounds containing a carbon to actinide chemical bond. Like most organometallic compounds, the organoactinides
Organoactinide_chemistry
Chemical substances containing carbon
Carbon compounds are chemical substances containing carbon. More compounds of carbon exist than any other chemical element except for hydrogen. Organic
Carbon_compounds
German chemist (1865–1949)
anderen Substanzen ausgehende Strahlung (On the radiation emitted by thorium compounds and some other substances)". Annalen der Physik und Chemie. 65: 141–151
Gerhard_Carl_Schmidt
Chemical element with atomic number 78 (Pt)
probably the most important platinum compound, as it serves as the precursor for many other platinum compounds. By itself, it has various applications
Platinum
Chemical element with atomic number 57 (La)
tungsten arc welding electrodes, as a substitute for radioactive thorium. Various compounds of lanthanum and other rare-earth elements (oxides, chlorides
Lanthanum
Index of chemical compounds with the same name
Thorium fluoride may refer to: Thorium(III) fluoride (thorium trifluoride), ThF3 Thorium(IV) fluoride (thorium tetrafluoride), ThF4 Thorium oxyfluoride
Thorium_fluoride
Chemical element with atomic number 51 (Sb)
dissolves in concentrated acid to form oxoantimonyl compounds such as SbOCl and (SbO)2SO4. Compounds in this class generally are described as derivatives
Antimony
Chemical element with atomic number 73 (Ta)
of new Ta compounds. It hydrolyzes readily to an oxychloride. The lower halides TaX4 and TaX3, feature Ta-Ta bonds. Organotantalum compounds include pentamethyltantalum
Tantalum
Chemical element with atomic number 84 (Po)
common compounds, and almost all of its compounds are synthetically created; more than 50 of those are known. The most stable class of polonium compounds are
Polonium
Chemical compounds
but less basic than their precursors. Praseodymium compounds Terbium compounds Thorium compounds Greenwood and Earnshaw, pp. 1244–8 Greenwood and Earnshaw
Cerium_compounds
means: (a) the production and use of thorium, or thorium compounds, and the production of products where thorium is deliberately added; or (b) the production
Naturally occurring radioactive material
Naturally_occurring_radioactive_material
Index of chemical compounds with the same name
Thorium chloride may refer to: Thorium(II) chloride (thorium dichloride), ThCl2 Thorium(III) chloride (thorium trichloride), ThCl3 Thorium(IV) chloride
Thorium_chloride
element radon by finding evidence that the "emanation" emitted by thorium compounds was likely to be a gas. This follows work in 1899 by Pierre and Marie
List of inventions and discoveries by women
List_of_inventions_and_discoveries_by_women
Chemical element with atomic number 36 (Kr)
Until the 1960s no noble gas compounds had been synthesized. Following the first successful synthesis of xenon compounds in 1962, synthesis of krypton
Krypton
Chemical element with atomic number 49 (In)
age of the Universe and nearly 30,000 times greater than half-life of thorium-232. The half-life of 115In is very long because the beta decay to 115Sn
Indium
Most stable isotope of radon
B. Owens observed a similar (though shorter-lived) emission from thorium compounds. German physicist Friedrich Ernst Dorn extensively studied these emanations
Radon-222
Study of the carbon-thorium bond
organothorium compounds, chemical compounds containing a carbon to thorium chemical bond. Most of the work on organothorium compounds has focused on
Organothorium_chemistry
Chemical element with atomic number 33 (As)
recognition of the persistent toxicity of arsenic and its compounds. Arsenic containing compounds have been known since ancient times to be poisonous to
Arsenic
biomolecules List of compounds List of copper salts List of inorganic compounds named after people List of minerals List of organic compounds List of organic
List_of_inorganic_compounds
Chemical element with atomic number 42 (Mo)
the chromium(III) compounds. The highest oxidation state is seen in molybdenum(VI) oxide (MoO3), whereas the normal sulfur compound is molybdenum disulfide
Molybdenum
sulfide and carbon disulfide on actinium oxide at 1000 °C. Thorium compounds Protactinium compounds Actinium, Great Soviet Encyclopedia (in Russian) Fried
Actinium_compounds
Town in Tennessee, United States
commercial nuclear reactors. Historically the facility also worked with thorium compounds. All Unicoi County residents are in the Unicoi County School District
Erwin,_Tennessee
Chemical element with atomic number 5 (B)
The elemental form is not typically used as a precursor to compounds. Instead, boron compounds are produced from borates. When exposed to air, under normal
Boron
Chemical compound
Thorium(IV) iodide is an inorganic chemical compound composed of thorium and iodine with the chemical formula ThI4. It is one of three known thorium iodides
Thorium(IV)_iodide
imported and domestically produced uranium metal, 9.5 kg of imported thorium compounds, and small amounts of domestically produced uranium dioxide (UO2)
Nuclear_program_of_Egypt
Chemical element with atomic number 3 (Li)
alkyl halides. Many other lithium compounds are used as reagents to prepare organic compounds. Some popular compounds include lithium aluminium hydride
Lithium
Chemical element with atomic number 20 (Ca)
involved the trend is reversed. In contrast to organomagnesium compounds, organocalcium compounds are not similarly useful, with one major exception, calcium
Calcium
Chemical element with atomic number 4 (Be)
reactions. Organometallic beryllium compounds are known to be highly reactive. Examples of known organoberyllium compounds are dineopentylberyllium, beryllocene
Beryllium
Chemical element with atomic number 93 (Np)
organoneptunium compounds are the cyclopentadienyl and cyclooctatetraenyl compounds and their derivatives. The trivalent cyclopentadienyl compound Np(C5H5)3·THF
Neptunium
Chemical element with atomic number 16 (S)
compounds are odoriferous, and the smells of odorized natural gas, skunk scent, bad breath, grapefruit, and garlic are due to organosulfur compounds.
Sulfur
Theoretical chemical element with atomic number 122 (Ubb)
Unbibium, also known as element 122 or eka-thorium, is a hypothetical chemical element; it has placeholder symbol Ubb and atomic number 122. Unbibium
Unbibium
– plutonium MeSH D01.268.033.725 – protactinium MeSH D01.268.033.900 – thorium MeSH D01.268.033.950 – uranium MeSH D01.268.150.038 – carbon fiber MeSH D01
List_of_MeSH_codes_(D01)
Grayite, ThPO4·(H2O), is a thorium phosphate mineral of the Rabdophane group first discovered in 1957 by S.H.U. Bowie in Rhodesia. It is of moderate hardness
Grayite
Chemical element with atomic number 24 (Cr)
manufacturers. Because chromium compounds were used in dyes, paints, and leather tanning compounds, these compounds are often found in soil and groundwater
Chromium
Class of chemical compounds
Actinocenes are a family of organoactinide compounds consisting of metallocenes containing elements from the actinide series. They typically have a sandwich
Actinocene
Soviet chemist
Chernyaev instructed Gelman to develop processes to isolate uranium and thorium compounds from aqueous solutions. This was followed up with the isolation of
Anna_Gelman
Chemical element with atomic number 79 (Au)
the noble metals, it still forms many diverse compounds. The oxidation state of gold in its compounds ranges from −1 to +5, but Au(I) and Au(III) dominate
Gold
Chemical element with atomic number 89 (Ac)
oxidation state +3 in nearly all its chemical compounds. Actinium is found only in traces in uranium and thorium ores as the isotope 227Ac, which decays with
Actinium
Chemical element with atomic number 56 (Ba)
calibrating pH equipment. Barium compounds burn with a green to pale green flame, which is an efficient test to detect a barium compound. The color results from
Barium
Mag-Thor is the common name for a range of magnesium (Mg) alloys containing thorium (Th) that are used in aerospace engineering. These alloys commonly contain
Mag-Thor
Chemical element with atomic number 59 (Pr)
and Y, with somewhat less Nd and Pr). Bastnäsite is usually lacking in thorium and the heavy lanthanides, and the purification of the light lanthanides
Praseodymium
April 1898, through a systematic search of substances, she finds that thorium compounds, like those of uranium, emitted "Becquerel rays", thus preceding the
Timeline_of_quantum_mechanics
Compounds containing at least one radium atom
Radium compounds are compounds containing the element radium (Ra). Due to radium's radioactivity, not many compounds have been well characterized. Solid
Radium_compounds
Chemical element with atomic number 40 (Zr)
tin. Zirconium forms a variety of inorganic compounds, such as zirconium dioxide, and organometallic compounds, such as zirconocene dichloride. Five isotopes
Zirconium
chemical compounds with chemical formulae and CAS numbers, indexed by formula. This complements alternative listing at list of inorganic compounds. Contents
Glossary_of_chemical_formulae
Chemical element with atomic number 23 (V)
depends on pH. Vanadium(II) compounds are reducing agents, and vanadium(V) compounds are oxidizing agents. Vanadium(IV) compounds often exist as vanadyl derivatives
Vanadium
Chemical compound
Thorium(IV) orthosilicate (ThSiO4) is an inorganic chemical compound. Thorite is a mineral that consists essentially of thorium orthosilicate. Chambers
Thorium(IV)_orthosilicate
This is a list of CAS numbers by chemical formulas and chemical compounds, indexed by formula.The CAS number is a unique number applied to a specific
List of CAS numbers by chemical compound
List_of_CAS_numbers_by_chemical_compound
Chemical element with atomic number 12 (Mg)
enzymes. Magnesium ions interact with polyphosphate compounds such as ATP, DNA and RNA. Magnesium compounds are used medicinally as common laxatives and antacids
Magnesium
Chemical element with atomic number 39 (Y)
a replacement for thorium, which is radioactive. Yttrium can be highly toxic to humans, animals and plants. Water-soluble compounds of yttrium are considered
Yttrium
Chemical element with atomic number 71 (Lu)
white material is thorium dioxide, with density of 10 g/cm3, but the thorium it contains is radioactive. Lutetium is also a compound of several scintillating
Lutetium
Natural process occurring on minerals
An example of a metamict mineral is zircon. The presence of uranium and thorium atoms substituting for zirconium in the crystal structure is responsible
Metamictisation
Chemical element with atomic number 22 (Ti)
most common compound, titanium dioxide (TiO2), is a popular photocatalyst and is used in the manufacture of white pigments. Other compounds include titanium
Titanium
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