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Gadolinium as a metal or a salt absorbs neutrons and is, therefore, used sometimes for shielding in neutron radiography and in nuclear reactors. Like most of the rare earths, gadolinium forms trivalent ions with fluorescent properties, and salts of gadolinium(III) are used as phosphors in various applications.
Gadolinium(III) oxide (archaically gadolinia) is an inorganic compound with the formula Gd 2 O 3. It is one of the most commonly available forms of the rare-earth element gadolinium , derivatives, of which are potential contrast agents for magnetic resonance imaging .
Gadolinium phosphide is an inorganic compound of gadolinium and phosphorus with the chemical formula GdP. [1] [2] Synthesis ... Physical properties
The World Health Organization issued a restriction on use of several gadolinium contrast agents in November 2009 stating that "High-risk gadolinium-containing contrast agents (Optimark, Omniscan, Magnevist, Magnegita, and Gado-MRT ratiopharm) are contraindicated in patients with severe kidney problems, in patients who are scheduled for or have ...
The decahydrate of gadolinium oxalate thermally decomposes to obtain the anhydrous form, which can then be heated to produce gadolinium oxide. [2] Gadolinium oxalate reacts with hydrochloric acid to produce Gd(C 2 O 4)Cl. [3] It also reacts with sodium hydroxide under hydrothermal conditions to produce gadolinium hydroxide. [1]
The crystal structure of gadolinium oxysulfide has Trigonal symmetry (space group number 164). Each gadolinium ion is coordinated by four oxygen atoms and three sulfur atoms in a non-inversion symmetric arrangement. The Gd 2 O 2 S structure is a sulfur layer with double layers of gadolinium and oxygen in between. [4]
Gadolinium monosulfide is a binary inorganic compound of gadolinium and sulfur with the chemical formula GdS. [1] [2] Synthesis ... Physical properties
Gadolinium isotopes have 10 metastable isomers, with the most stable being 143m Gd (t 1/2 = 110 seconds), 145m Gd (t 1/2 = 85 seconds) and 141m Gd (t 1/2 = 24.5 seconds). The primary decay mode at atomic weights lower than the most abundant stable isotope, 158 Gd, is electron capture , and the primary mode at higher atomic weights is beta decay .