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Terbium is a silvery-white rare earth metal that is malleable, ductile and soft enough to be cut with a knife. [9] It is relatively stable in air compared to the more reactive lanthanides in the first half of the lanthanide series. [10] Terbium exists in two crystal allotropes with a transformation temperature of 1289 °C between them. [9]
Isotopes of terbium (65Tb) 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 ...
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) 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 (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 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 ...
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 ...
Terbium oxide. Terbium oxide may refer to any of the following: Terbium (III) oxide, Tb 2 O 3. Terbium (III,IV) oxide, Tb 4 O 7. Terbium (IV) oxide, TbO 2. Category: Set index articles on chemistry.