碱金属是一类最易放出电子的元素,例如钠很容易将电子交给氯,生成氯化钠。金属钠放出电子时其猛烈的程度是以取代水份子的氢生成氢氧化钠。由于金属钠很活泼,因此在自然界中没有单独存在。实际上,钠都是以阳离子状态(Na~+)而存在着。钠原子释出电子便成为钠的阳离子了。人们早已熟知碱金属这一性质,因此当听到碱金属可与其原来性质相反,能接受电子时,不禁感到惊奇。金属钠可接受电子成为钠阴离子(Na~-)。以前也知道,在气体 Alkali metal is one of the most electron-emitting elements. For example, sodium easily transfers electrons to chlorine to form sodium chloride. Metallic sodium emits electrons when its violent degree is to replace the water molecules of hydrogen to generate sodium hydroxide. Because sodium metal is very lively, it does not exist alone in nature. In fact, sodium is present in the cationic state (Na ~ +). The release of electrons by the sodium atom becomes the cation of sodium. Already known as alkali metal, it is surprising to hear that the alkali metal, contrary to its original nature, can accept electrons. Metal sodium acceptable as sodium anion (Na ~ -. I used to know that gas