在化学习题的求解过程中 ,无机化合物推断题是学生感到较难求解的一类题目。它不像物质结构或元素推断题 ,内容范围窄 ,无论如何变化 ,总是 1～ 18号元素中的几个常见的重要元素 ;也不同于有机推断题 ,规律性强。无机化合物内容多、范围广、知识零散 ,学生解题总是找不到可循的 In the process of solving a chemistry problem, the inorganic compound inference problem is a class of problems that students find difficult to solve. It is not like the question of material structure or element inference. The scope of the content is narrow. However it changes, it is always a few common important elements in No. 1 to No. 18 elements. It also differs from organic inference questions and has strong regularity. There are many inorganic compounds, a wide range of knowledge, scattered knowledge, students can not find the problem solving