|
Thulium(III) Hydroxide
Thulium(III) hydroxide is an inorganic compound with the chemical formula Tm(OH)3. Chemical properties Thulium(III) hydroxide reacts with acids and produces thulium(III) salts: : Tm(OH)3 + 3 H+ → Tm3+ + 3 H2O Thulium(III) hydroxide decomposes to TmO(OH) at elevated temperature. Further decomposition produces thulium oxide, Tm2O3. References {{hydroxides Thulium compounds Hydroxides ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thulium Oxide
Thulium(III) oxide is a pale green crystalline compound, with the formula thulium, Tm2oxygen, O3. It was first isolated in 1879, from an impure sample of erbia, by Sweden, Swedish chemist Per Teodor Cleve, who named it ''thulia''. Synthesis Thulium(III) oxide has been made in the laboratory using various methods. One method involves burning thulium metal or its various salts in air. Thulium(III) oxide can be made using a hydrothermal method where thulium(III) acetate is mixed with an ammonia solution, which causes thulium(III) oxide to precipitate as a white solid. Properties Thulium(III) oxide (Tm₂O₃) is a pale green, thermally stable powder with a high melting point of 2,341 °C and a density of 8.6 g/cm³, typically forming a cubic crystal structure. It is resistant to oxidation and dissolves in strong acids like hydrochloric acid, allowing it to form soluble thulium salts. Due to its unique f-electron configuration, Tm₂O₃ has notable optical properties. Thulium oxid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erbium(III) Hydroxide
Erbium(III) hydroxide is an inorganic compound with chemical formula Er(OH)3. Chemical properties Erbium(III) hydroxide reacts with acids An acid is a molecule or ion capable of either donating a proton (i.e. hydrogen cation, H+), known as a Brønsted–Lowry acid, or forming a covalent bond with an electron pair, known as a Lewis acid. The first category of acids are the ... and produces erbium(III) salts: : Er(OH)3 + 3H+ → Er3+ + 3H2O Erbium(III) hydroxide decomposes to ErO(OH) at elevated temperature. Further decomposition produces Er2O3. References {{hydroxides Erbium compounds Hydroxides ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ytterbium(III) Hydroxide
Ytterbium(III) hydroxide is an inorganic compound with the chemical formula Yb(OH)3. Chemical properties Ytterbium(III) hydroxide dissolves in acid to form a ytterbium salt: : Ytterbium(III) hydroxide is decomposed by heat, first forming YbO(OH), and continuing to heat to obtain Yb2O3. It reacts with aluminum hydroxide oxide (AlOOH) at 1400 °C to obtain Yb3Al5O12. References {{Hydroxides Ytterbium(III) compounds category:Hydroxides ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inorganic Compound
An inorganic compound is typically a chemical compound that lacks carbon–hydrogen bondsthat is, a compound that is not an organic compound. The study of inorganic compounds is a subfield of chemistry known as ''inorganic chemistry''. Inorganic compounds comprise most of the Earth's crust, although the compositions of the deep Mantle (geology), mantle remain active areas of investigation. All allotropes (structurally different pure forms of an element) and some simple carbon compounds are often considered inorganic. Examples include the allotropes of carbon (graphite, diamond, buckminsterfullerene, graphene, etc.), carbon monoxide , carbon dioxide , carbides, and salt (chemistry), salts of inorganic anions such as carbonates, cyanides, cyanates, thiocyanates, isothiocyanates, etc. Many of these are normal parts of mostly organic systems, including organisms; describing a chemical as inorganic does not necessarily mean that it cannot occur within life, living things. History ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chemical Formula
A chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and ''plus'' (+) and ''minus'' (−) signs. These are limited to a single typographic line of symbols, which may include subscripts and superscripts. A chemical formula is not a chemical name since it does not contain any words. Although a chemical formula may imply certain simple chemical structures, it is not the same as a full chemical structural formula. Chemical formulae can fully specify the structure of only the simplest of molecules and chemical substances, and are generally more limited in power than chemical names and structural formulae. The simplest types of chemical formulae are called '' empirical formulae'', which use letters and numbers indicating the numerical ''proportions'' of atoms ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acids
An acid is a molecule or ion capable of either donating a proton (i.e. hydrogen cation, H+), known as a Brønsted–Lowry acid, or forming a covalent bond with an electron pair, known as a Lewis acid. The first category of acids are the proton donors, or Brønsted–Lowry acids. In the special case of aqueous solutions, proton donors form the hydronium ion H3O+ and are known as Arrhenius acids. Brønsted and Lowry generalized the Arrhenius theory to include non-aqueous solvents. A Brønsted–Lowry or Arrhenius acid usually contains a hydrogen atom bonded to a chemical structure that is still energetically favorable after loss of H+. Aqueous Arrhenius acids have characteristic properties that provide a practical description of an acid. Acids form aqueous solutions with a sour taste, can turn blue litmus red, and react with bases and certain metals (like calcium) to form salts. The word ''acid'' is derived from the Latin , meaning 'sour'. An aqueous solution of an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thulium Hydroxide
Thulium(III) hydroxide is an inorganic compound with the chemical formula Tm(OH)3. Chemical properties Thulium(III) hydroxide reacts with acids An acid is a molecule or ion capable of either donating a proton (i.e. hydrogen cation, H+), known as a Brønsted–Lowry acid, or forming a covalent bond with an electron pair, known as a Lewis acid. The first category of acids are the ... and produces thulium(III) salts: : Tm(OH)3 + 3 H+ → Tm3+ + 3 H2O Thulium(III) hydroxide decomposes to TmO(OH) at elevated temperature. Further decomposition produces Tm2O3. References {{hydroxides Thulium compounds Hydroxides ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thulium Compounds
Thulium is a chemical element; it has symbol Tm and atomic number 69. It is the thirteenth element in the lanthanide series of metals. It is the second-least abundant lanthanide in the Earth's crust, after radioactively unstable promethium. It is an easily workable metal with a bright silvery-gray luster. It is fairly soft and slowly tarnishes in air. Despite its high price and rarity, thulium is used as a dopant in solid-state lasers, and as the radiation source in some portable X-ray devices. It has no significant biological role and is not particularly toxic. In 1879, the Swedish chemist Per Teodor Cleve separated two previously unknown components, which he called holmia and thulia, from the rare-earth mineral erbia; these were the oxides of holmium and thulium, respectively. His example of thulium oxide contained impurities of ytterbium oxide. A relatively pure sample of thulium oxide was first obtained in 1911. The metal itself was first obtained in 1936 by Wilhelm Klemm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
