大家好，今天是兼職芒果回歸的第二天，我現在在喝芒果汁。發現之前元祖芒果在這裏po 了很多地理，那我也可以po 一些化學，不要問我為啥不放生物和經濟，因爲我忘記學啥了，本兼職芒果只依稀記得一些化學。今天想説的是 why diamond has a higher melting point than iodine29Please respect copyright.ＰＥＮＡＮＡX5USeZpSAd
Diamond has a giant covalent structure while iodine has a simple molecular structure.
Carbon atoms in diamond are held together by stronger covalent bonds, while iodine molecules in iodine are held together by weaker van der Waals' forces.
Therefore, more energy is required to separate carbon atoms in carbon than the iodine molecules in iodine.
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Therefore, more energy is required to break the covalent bonds than the van der Waals' forces.
無聊補充： 雖然我們在這裏說melting point of iodine 但其實iodine will sublime in iodine gas (purple gas) directly without changing into liquid state, 這過程就叫升華。
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