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碘单质具有哪些物理性质

更新时间: 2020-07-14 00:00:00     

单质碘的物理性质:紫黑色晶体,具有金属光泽,性脆,易升华。有毒性和腐蚀性。密度4、93 克每立方厘米。熔点113、5摄氏度,沸点184、35摄氏度。加热时,碘升华为紫色蒸汽,这种蒸气有刺激性气味。易溶于乙醚、乙醇、氯仿和其他有机溶剂,形成紫色溶液,但微溶于水,水中含碘离子会使其溶解度增大,也溶于氢碘酸和碘化钾溶液而呈深褐色。和同族卤素气体一样,碘蒸汽有毒。

关键词: 单质 具有 哪些 物理性质

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