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Curium(III) hydroxide
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<p>Curium hydroxide Cm(OH)3 is a <a href="/facts/Radioactivity/Ya6FVjt4">radioactive</a> compound first discovered in measurable quantities in 1947. It is composed of a single <a href="/facts/Curium/LMyWXg8l">curium</a> atom and three <a href="/facts/Hydroxy_group/1Hs2QAEv">hydroxy groups</a>. It was the first curium compound ever isolated. </p><p>Curium hydroxide is an anhydrous colorless or light-yellow amorphous gelatinous solid that is insoluble in water. </p><p>Due to self-irradiation, the crystal structure of 244Cm(OH)3 decomposes within one day (244Cm has a half-life of 18.11 years); for <a href="/facts/Americium(III)_hydroxide/hpqDz2Bd">241Am(OH)3</a> the same process takes 4 to 6 months (241Am has a half-life of 432.2 years). </p>