Halogen atoms contain seven electrons in their valence shell.卤原子在它们的介电子层含有七个电子.Without doubt chloroform is one of the most important compounds containing a carbon - halogen bond.毫无疑问,氯仿是含碳?卤键的最重要的化合物之一.The formation of p...

alkylogen的音标：alkylogen的英式发音音标为：[æl'kɪləʊdʒen]alkylogen的美式发音音标为：[æl'kɪloʊdʒen]...