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原子晶体中的原子以较强共价键相连接,因此在晶体中,原子不遵循紧密堆积原则;原子晶体一般熔点都很高,硬度都很大,这是由于原子晶体熔化时必须破坏其中的共价键,而共价键的键能相对较大,破坏它们需要很多的能量.另外原子晶体还具有难溶于水,固态时不导电等性质.一、金刚石(碳原子)背景知识:在金刚石晶体里,每个碳原子都被相邻的4个碳原子包围,以共价键跟4个碳原子结合,形成
The atomic atoms in atomic crystals are connected by strong covalent bonds, so the atoms do not follow the principle of close packing in the crystals. The atomic crystals generally have high melting points and high hardness because the atomic crystals must be destroyed when they melt Covalent bonds, and covalent bonds can be relatively large, destroy them requires a lot of energy. In addition, the atomic crystal also has a poorly water-soluble, solid state is not conductive and so on .. First, the diamond (carbon atoms) Background: In diamond crystals, each carbon atom is surrounded by four adjacent carbon atoms and covalently bonded to four carbon atoms to form