halogen是什么意思 halogen的用法 halogen怎么读

halogen

英 ['hælədʒ(ə)n; 'heɪl-]美 ['hælədʒən]

n. [化学] 卤素

星级词汇:★

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中文词源

halogen 卤素

halo-,盐，词源同salt,-gen,生成，词源同generate.即生成盐的卤素。

英语词源

halogen (n.)

general name for elements of the chlorine family, 1842, from Swedish, coined by Swedish chemist Baron Jöns Jakob Berzelius (1779-1848), literally "salt-producer," from Greek hals

"salt" (see halo-) + -gen "giving birth to" (see -gen); so called because a salt is formed in reactions involving these four elements. Related: Halogenous.

权威例句

1. 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.

2. 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.

3. The formation of polyhalides depends on the combination of a central halide ion with a halogen.

多卤化物的形成取决于中心卤化物离子与卤素的结合.

4. Halogen atoms contain seven electrons in their valence shell, and , consequently, are monovalent.

卤原子在它们的价电子层含有七个电子, 因此是一价的.

5. The cable achieves the performance of low smoke halogen free.

电缆具有低烟、无卤特性.

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