The nature and application of iron and its compounds
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December 04 07:03:29, 2024
Section IV Iron and its compounds [Review goal] 1. Understand the properties and applications of iron and its compounds. 2. Understand the main properties and applications of important iron compounds. 3. Master the testing methods of Fe2 + and Fe3 + and the mutual conversion of Fe, Fe2 + and Fe3 +. [Knowledge combing] 1. Iron elemental iron is located in the ____ period ____ group of the periodic table. The outermost electrons of the atom are only ____. The content of iron in the earth's crust is second only to _____, _____ and _____ ranking _____. 1. Physical properties: Iron is a bright colored metal, with better properties, and can be attracted.