Luxury Old Periodic Table
- 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's introduced by Russian chemist Dmitri Mendeleev in 1869 to look for the periodic trends inside properties of elements.
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Amazing old periodic table
Sun and rain are listed according to their increasing atomic numbers. Rows are arranged in such a way that elements concentrating on the same properties fit 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). Usually there are some groups that enjoy non-systematic names as well. Don't merely could be the groups in your periodic table, various other groupings of elements often named as well. These are lanthanoids and actinoids.
This able periodic table shows the relative density of each element by the width of the colored bar
Stunning old periodic table
In 2006, the periodic table contained 117 periodic elements. Out of such, 92 are only naturally on the globe, and the other parts are artificial elements.