Search results
Results from the WOW.Com Content Network
Terbium is a chemical element; it has the symbol Tb and atomic number 65. It is a silvery-white, rare earth metal that is malleable and ductile. The ninth member of the lanthanide series, terbium is a fairly electropositive metal that reacts with water, evolving hydrogen gas.
Terbium compounds are compounds formed by the lanthanide metal terbium (Tb). Terbium generally exhibits the +3 oxidation state in these compounds, such as in TbCl 3, Tb (NO 3) 3 and Tb (CH 3 COO) 3. Compounds with terbium in the +4 oxidation state are also known, such as TbO 2 and BaTbF 6. [ 1 ] Terbium can also form compounds in the 0, [ 2 ...
Naturally occurring terbium (65 Tb) is composed of one stable isotope, 159 Tb. Thirty-seven radioisotopes have been characterized, with the most stable being 158 Tb with a half-life of 180 years, 157 Tb with a half-life of 71 years, and 160 Tb with a half-life of 72.3 days. All of the remaining radioactive isotopes have half-lives that are less ...
Terbium (III,IV) oxide, occasionally called tetraterbium heptaoxide, has the formula Tb 4 O 7, though some texts refer to it as TbO 1.75. There is some debate as to whether it is a discrete compound, or simply one phase in an interstitial oxide system. Tb 4 O 7 is one of the main commercial terbium compounds, and the only such product ...
Terbium(III) oxide, also known as terbium sesquioxide, is a sesquioxide of the rare earth metal terbium, having chemical formula Tb 2 O 3. It is a p-type semiconductor, which conducts protons, which is enhanced when doped with calcium. [3] It may be prepared by the reduction of Tb 4 O 7 in hydrogen at 1300 °C for 24 hours. [4] Tb 4 O 7 + H 2 ...
Terbium(IV) oxide is an inorganic compound with a chemical formula TbO 2. It can be produced by oxidizing terbium(III) oxide by oxygen gas at 1000 atm and 300 °C. [ 2 ]
Terbium (III) acetate reacts with caesium carbonate to form a precipitation of terbium hydroxycarbonate, which reacts with excess caesium carbonate and dissolves again. The reaction was irradiated with ultraviolet light with a wavelength of 365 nm, which has the characteristic green light of terbium. The tetrahydrate of terbium acetate can lose ...
In 1843, Carl Gustaf Mosander discovered terbium and erbium as components of yttria. [ 4 ] : 38 [ 2 ] : 701 [ 5 ] [ 6 ] [ 7 ] However, this discovery was hotly contested. Spectroscopist Nils Johan Berlin denied that the two elements existed, failing to confirm the existence of "erbia" and suggesting that its name be applied to "terbia".