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氮及其化合物是中学化学必修的重要物质,在复习过程中强调基础的同时还应进行适当的延伸,及时发现和解决学习中存在的疑点,这对提高综合应变能力至关重要。疑点一:氮元素是活泼的非金属元素,为什么氮气化学性质不活泼?解析从氮的气态氢化物稳定性氨很稳定,不易分解;最高价氧化物对应水化物硝酸是强酸等方面进行判断,氮元素是活泼的非金属元素。氮气分子中存在氮氮三键,很难被破坏,所以氮气化学性质不活泼。
Nitrogen and its compounds are important compulsory materials for secondary school chemistry. In the process of reviewing, they emphasize the foundation and extend appropriately. It is very important to find and solve the doubt in learning in time, which is to improve the comprehensive adaptability. Doubt point one: nitrogen is a lively non-metallic elements, why the chemical nature of nitrogen is not active? Analysis of the stability of gaseous hydrogen from nitrogen Nitrogen is very stable, not easy to decompose; the highest oxide corresponding hydrated nitric acid is a strong acid, etc. to judge, Nitrogen is a lively non-metallic element. Nitrogen nitrogen molecules in the three nitrogen bonds, it is difficult to be destroyed, so the chemical nature of nitrogen is not active.