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石墨和金刚石硬度不同

发布时间:2020-06-13 11:01:36 浏览:255次

石墨是元素碳的一种同素异形体,每个碳原子的周边连结着另外三个碳原子(排列方式呈蜂巢式的多个六边形)以共价键分离,构成共价分子。 由于每个碳原子均会放出一个电子,那些电子可以自在挪动,因而石墨属于导电体。 石墨是其中一种*软的矿物,它的用处包括制造铅笔芯和光滑剂还有石墨模具。碳是一种非金属元素,位于元素周期表的第二周期IVA族。拉丁语为Carbonium,意为“煤,木炭”,汉字“碳”字由木炭的“炭”字加石字旁构成,从“炭”字音。

石墨和金刚石硬度不同

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