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- The periodic table of elements is usually a table which shows the arrangement of chemical elements ordered by atomic numbers in columns and rows. It has been created by Russian chemist Dmitri Mendeleev in 1869 to discover the periodic trends inside the properties of elements.
Periodic table of elements
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Beautiful dynamic periodic table
The sun and rain are listed consistent with their increasing atomic numbers. Rows are arranged in a way that elements with the exact same properties get caught in an 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). You'll find groups that enjoy non-systematic names as well. Besides are often the groups with the periodic table, many other groupings of elements often named as well. They may be lanthanoids and actinoids.
C3W13 18 Free Periodic Table of the Elements more 12 page Set of Printable Worksheets
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In 2006, the periodic table contained 117 periodic elements. Out the hands down, 92 you find naturally across the world, and the others are artificial elements.