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- The periodic table of elements can be described as table which shows the arrangement of chemical elements ordered by atomic numbers in columns and rows. It was subsequently introduced by Russian chemist Dmitri Mendeleev in 1869 to determine the periodic trends on the properties of elements.
This periodic table includes the names symbols and atomic numbers of the elements
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The next wind storm are listed reported by their increasing atomic numbers. Rows are arranged in such a way that elements with just one properties fit in a similar vertical columns. The groups or columns are numbered 1-18. The arrangement is Group 1(alkali metals), Group 2(alkaline earth metals), Group 15 (pnicogens), Group 16(chalcogens), Group 17(halogens) and Group 18(noble gases). Often times there are groups that enjoy non-systematic names as well. But not only could be the groups during the periodic table, some other sort of groupings of elements often named as well. These are lanthanoids and actinoids.
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In 2006, the periodic table contained 117 periodic elements. Out of such, 92 are merely naturally in the world, and the remainder are artificial elements.