一、词源学辨析
1. halogen(卤素)
- 希腊语词根"hals"(盐)+ "gen"(产生)
- 字面义为"成盐元素",指周期表VIIA族元素(F,Cl,Br,I,At)
2. halide(卤化物)
- "hal(o)"(卤素)+ 化学后缀"-ide"(表示二元化合物)
- 特指卤素与其他元素形成的化合物
二、语义场差异
halogen构成独立语义场,指代元素本体;
halide则存在于化合物语义网络,必须指向:
① 金属卤化物(如NaCl)
② 非金属卤化物(如PCl?)
③ 有机卤化物(如CH?Cl)
三、句法表现对比
1. halogen常作主语/宾语:
"The h ...(以上内容有节略,please sign in for more)
An electro-negative element or radical, which, by combination with a metal, forms a haloid salt; especially, chlorine, fluorine, bromine, and iodine; sometimes, also cyanogen. See Chlorine family, under Chlorine.
An electro-negative element or radical, which, by combination with a metal, forms a haloid salt; especially, chlorine, fluorine, bromine, and iodine; sometimes, also cyanogen. See Chlorine family, under Chlorine.