化學問題
舉一個例~SiO2(Sillicon dioxide)石英喇....個化學結構係4粒oxygen 包住1粒 sillicon喇....share 1粒電子...我想問既係點解佢唔form 兩個double bond,share 兩粒電子..都係SiO2..呢= =.... 冇得解,呢個係特殊既case黎 唔係wor,,,我chem老師話有得解-_-佢話關stable 問題事..... 同graphite diamond一樣係giant covalent structurespecial case 本帖最後由 p445hkk20001 於 23-10-2010 04:15 編輯
SiO2只係Empirical formula計出黎比例黎
唔係Molecular formula
而Giant covalent structure 無Molecular formula Si forms unfavorable pi bonds with O and is easily distorted by pz and py of Os, unstable, four sigma much better.
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