樂古Nakuz
標題:
化學問題
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作者:
神忍光仔
時間:
19-10-2010 19:03
標題:
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= =....
作者:
-終場ソ使者-
時間:
19-10-2010 19:38
冇得解,呢個係特殊既case黎
作者:
神忍光仔
時間:
19-10-2010 20:09
唔係wor,,,我chem老師話有得解-_-佢話關stable 問題事.....
作者:
小朋友你好
時間:
19-10-2010 22:46
同graphite diamond一樣係giant covalent structure
special case
作者:
p445hkk20001
時間:
23-10-2010 18:09
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
作者:
paladin
時間:
10-11-2011 23:10
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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