A | B | C | D | E | F | G | H | CH | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9
Identifiers | |
---|---|
3D model (JSmol)
|
|
| |
| |
Properties | |
Pm(OH)3 | |
Appearance | purplish-pink solid |
Density | 5.1 g/cm3 |
Structure | |
hexagonal | |
a = 6.39 Å, c = 3.68 Å
| |
Related compounds | |
Other anions
|
promethium oxide |
Other cations
|
neodymium(III) hydroxide samarium(III) hydroxide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa).
|
Promethium(III) hydroxide is an inorganic compound with a chemical formula Pm(OH)3. It is a radioactive compound.
Production
Promethium(III) hydroxide can be produced by reacting ammonia water with a solution of a promethium(III) salt, from which promethium(III) hydroxide precipitates as a purplish-pink amorphous solid. By heating with water, it can be forced to crystallize, giving hexagonal crystals isomorphous with other rare earth hydroxides:[1]
- Pm3+ + 3OH− → Pm(OH)3↓
References
- ^ Weigel, Fritz; Scherer, Volker (1967). "Die Chemie Des Promethiums. VI. Kristallines Promethium(III)-hydroxid" [Chemistry of promethium. VI. Crystalline promethium(III) hydroxide]. Radiochimica Acta (in German). 7 (2–3): 72–74. doi:10.1524/ract.1967.7.23.72. S2CID 201841420.
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