周期表下载

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The periodic table is a tabular display of the chemical elements, organized on the basis of their properties. Elements are presented in increasing atomic number. The main body of the table is a 18 × 7 grid, with gaps included in to keep elements with similar properties together, such as the halogens and the noble gases. These gaps form four distinct rectangular areas or blocks. The f-block is not included in the main table, but rather is usually floated below, as an inline f-block would make the table impractically wide. The periodic table accurately predicts the properties of various elements and the relations between properties. As a result, it provides a useful framework for analyzing chemical behavior, and is widely used in chemistry and other sciences.
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元素周期表是化学元素，有组织它们的属性的基础上，以表格形式显示。元素都在不断增加原子序数。在表的主体是一个18×7网格，与包括在保持具有类似性质的元素的合计，如卤素和稀有气体的间隙。这些差距形成四个不同的矩形区域或块。 f区不包括在主台，而是在下面通常被浮动，作为内嵌f区会使表不切实际宽。周期表中准确地预测各种元素和属性之间的关系的性质。其结果是，它提供了用于分析化学行为的有用框架，并且被广泛用于化学和其他科学。

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