一、问题的提出碱金属是非常活泼的金属,它们能够和很多物质发生化学反应。在中学化学教材中已经论及不同的碱金属能够和空气中的氧气反应生成不同的氧化物。但是,我们知道,按体积分数计算,空气中78％的都是氮气,而氧气只占21％。那么,碱金属能否和空气中的氮气反应呢?或者说,碱金属能否和氮气反应呢?如果能反应,反应的情况如何?如果不能反应,那又 First, the issue raised Alkali metal is a very lively metal, they can react with a lot of material. It has been mentioned in secondary chemistry textbooks that different alkali metals react with the oxygen in the air to produce different oxides. However, we know that 78% of the air is nitrogen by volume fraction, while oxygen accounts for only 21%. So, alkali metal and nitrogen in the air can react? Or that alkali metal can react with nitrogen? If you can react, the reaction of the situation? If you can not react, then