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yueamao(½ð±Ò+1): 2010-06-24 19:27:20
wypward(½ð±Ò+1):лл²ÎÓë 2010-06-24 20:16:40
yueamao(½ð±Ò+1): 2010-06-24 19:27:20
wypward(½ð±Ò+1):лл²ÎÓë 2010-06-24 20:16:40
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Because the three nitrogen atoms of Guanidine cation are conjugate, positive charge distribution in the three nitrogen atoms and the central carbon |
3Â¥2010-06-24 18:13:48














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