一、关于四氧化三铁四氧化三铁是铁的重要氧化物,它的结构如何,特别是其中铁的价态如何,是历来中学生发问最多的内容之一。化学统编教材说四氧化三铁是一种复杂的化合物,“可以看成是氧化亚铁和氧化铁组成的化合物。”我认为这种提法是欠妥的。目前,结构化学研究的结果已经查明四氧化三铁是由Fe~(2+)、Fe~(3+)和O~(2-)组成的离子晶体,属立方晶系具有反式尖晶石的晶体结构,就其化学式而言,属于AB_2O_4型同素异 First, about the three ferric oxide The three ferric oxide is an important oxide of iron, its structure, in particular, how the price of iron, is always one of the most problematic secondary school students content. The textbook says that ferroferric oxide is a complex compound that “can be thought of as a compound of ferrous oxide and ferric oxide.” I think this formulation is a flawed one. At present, the results of structural chemistry studies have confirmed that ferroferric oxide is an ionic crystal composed of Fe2 +, Fe3 +, and O2- and belongs to the cubic system with trans-spinel The crystal structure of stone, in terms of its chemical formula, belongs to the same type AB_2O_4