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- The periodic table of elements is often a table which shows the arrangement of chemical elements ordered by atomic numbers in columns and rows. It had been designed by Russian chemist Dmitri Mendeleev in 1869 to look for the periodic trends during the properties of elements.
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Terrific periodic table of elements arsenic
The next thunderstorm are listed according to their increasing atomic numbers. Rows are arranged in a manner that elements with similar properties get into identical 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). There are numerous groups that enjoy non-systematic names as well. But not only tend to be the groups while in the periodic table, other sorts of groupings of elements often named as well. They can indeed be lanthanoids and actinoids.
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In 2006, the periodic table contained 117 periodic elements. Out worth mentioning, 92 are found naturally remaining, and others in the industry are artificial elements.