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Ammonium ferric citrate (also known as ferric ammonium citrate or ammoniacal ferrous citrate) has the formula [NH 4]y[Fe x (C 6 H 4 O 7)].The iron in this compound is trivalent.All three carboxyl groups and the central hydroxyl group of citric acid are deprotonated.
Fe 2 B is a ferromagnetic compound that becomes paramagnetic at temperatures above 742 °C (1368 °F). [14] In air, Fe 2 B powders begin to react with the ambient oxygen above 400 °C. The high hardness of Fe2B (18.7 GPa or 1907 HV as measured by Vickers indentation) [ 15 ] is why homogeneous Fe 2 B layers are formed on top of iron or steel by ...
Prussian blue or "ferric ferrocyanide", Fe 4 [Fe(CN) 6] 3, is an old and well-known iron-cyanide complex, extensively used as pigment and in several other applications. Its formation can be used as a simple wet chemistry test to distinguish between aqueous solutions of Fe 2+ and Fe 3+ as they react (respectively) with potassium ferricyanide and ...
The nuclide 54 Fe theoretically can undergo double electron capture to 54 Cr, but the process has never been observed and only a lower limit on the half-life of 4.4×10 20 years has been established. [22] 60 Fe is an extinct radionuclide of long half-life (2.6 million years). [23]
Iron(III) nitrate, or ferric nitrate, is the name used for a series of inorganic compounds with the formula Fe(NO 3) 3. (H 2 O) n. Most common is the nonahydrate Fe(NO 3) 3. (H 2 O) 9. The hydrates are all pale colored, water-soluble paramagnetic salts.
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The solid consists of K + and the tetrahedral FeO 2− 4 anion, with Fe-O distances of 1.66 Å. [7] Potassium ferrate decomposes rapidly in neutral and acidic water, e.g.: [8] 4 K 2 FeO 4 + 4 H 2 O → 3 O 2 + 2 Fe 2 O 3 + 8 KOH. In alkaline solution and as a dry solid, K 2 FeO 4 is stable. Under the acidic conditions, the oxidation–reduction ...
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