Group (periodic table) - Wikipedia, the free encyclopedia

Group (periodic table) - Wikipedia, the free encyclopedia

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日期:2024-04-27
In chemistry, a group (also known as a family) is a column of elements in the periodic table of the chemical elements. There are 18 numbered groups in the periodic table, but the f-block columns (between groups 2 and 3) are not numbered. The elements in a...看更多