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- Berkelium forms a number of chemical compounds, where it normally exists in an oxidation state of +3 or +4, and behaves similarly to its lanthanide analogue, terbium. Like all actinides, berkelium easily dissolves in various aqueous inorganic acids, liberating gaseous hydrogen and converting into the trivalent oxidation state. This trivalent state is the most stable, especially in aqueous solutions, but tetravalent berkelium compounds are also known. The existence of divalent berkelium salts is uncertain and has only been reported in mixed lanthanum chloride-strontium chloride melts. Aqueous solutions of Bk3+ ions are green in most acids. The color of the Bk4+ ions is yellow in hydrochloric acid and orange-yellow in sulfuric acid. Berkelium does not react rapidly with oxygen at room temperature, possibly due to the formation of a protective oxide surface layer; however, it reacts with molten metals, hydrogen, halogens, chalcogens and pnictogens to form various binary compounds. Berkelium can also form several organometallic compounds. (en)
- 锫可以形成很多化合物。它们的氧化态通常是+3或者是+4，化学性质和铽相似。与所有锕系元素一样，锫也会无机酸里形成含Bk3+离子的盐，并放出氢气。三价锫化合物是最稳定的锫化合物，尤其是在水溶液里，但四价锫化合物也是已知的。二价锫盐只在氯化镧-氯化锶的融化里被报告。Bk3+ 离子在酸里是绿色的。Bk4+ 离子在盐酸里是黄色的，在硫酸里则是橙色的。锫不与氧气迅速反应，因为它会形成一层氧化锫保护层。但是，锫可以和液态的金属，氢，卤素，氧族元素和氮族元素形成二元化合物。锫也可以形成有机金属化合物。 (zh)
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- 锫可以形成很多化合物。它们的氧化态通常是+3或者是+4，化学性质和铽相似。与所有锕系元素一样，锫也会无机酸里形成含Bk3+离子的盐，并放出氢气。三价锫化合物是最稳定的锫化合物，尤其是在水溶液里，但四价锫化合物也是已知的。二价锫盐只在氯化镧-氯化锶的融化里被报告。Bk3+ 离子在酸里是绿色的。Bk4+ 离子在盐酸里是黄色的，在硫酸里则是橙色的。锫不与氧气迅速反应，因为它会形成一层氧化锫保护层。但是，锫可以和液态的金属，氢，卤素，氧族元素和氮族元素形成二元化合物。锫也可以形成有机金属化合物。 (zh)
- Berkelium forms a number of chemical compounds, where it normally exists in an oxidation state of +3 or +4, and behaves similarly to its lanthanide analogue, terbium. Like all actinides, berkelium easily dissolves in various aqueous inorganic acids, liberating gaseous hydrogen and converting into the trivalent oxidation state. This trivalent state is the most stable, especially in aqueous solutions, but tetravalent berkelium compounds are also known. The existence of divalent berkelium salts is uncertain and has only been reported in mixed lanthanum chloride-strontium chloride melts. Aqueous solutions of Bk3+ ions are green in most acids. The color of the Bk4+ ions is yellow in hydrochloric acid and orange-yellow in sulfuric acid. Berkelium does not react rapidly with oxygen at room temper (en)
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- Berkelium compounds (en)
- 锫化合物 (zh)
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