Brief notes on Periodic Table
The Periodic Table (Sec 4 topic) Why should we study the Periodic Table? This Table is of utmost importance to scientists and technology users. There are about 118 elements found in the modern Periodic Table (as in year 2023). Some heavier elements are made in the gigantic atomic reactors by scientists. Some elements are radioactive. The Japan nuclear disaster in 2011 was due partly to leaking radioactive materials and the earthquakes and tsunamis. In the 18th century, many scientists have tried to organize the elements into patterns. One scientist came up with a spiral “ancient” Periodic Table. Mendeleev, a shrewd and wise scientist, noticed patterns and trends in the elements that were discovered then and organized the elements into a “primitive” Periodic Table. He even made predictions about elements that were not yet discovered and he was very accurate about the properties of some of the “new” elements that were discovered after him. The modern Periodic Table is a w...