Ever heard about the Periodic Table? Ever learned about the Periodic Table? Ever learned anything about the elements? If not, com check this post out. I will explain everything about the Periodic Table. I will explain how it is found, and who discovered it. So, what are you waiting for, come check this post out!
The periodic table of elements arranges all of the known chemical elements in an informative array. Elements are arranged from left to right and top to bottom in order of increasing atomic number. Order generally coincides with increasing atomic mass.
The rows are called periods. The period number of an element signifies the highest energy level an electron in that element occupies. The number of electrons in a period increases as one moves down the periodic table; therefore, as the energy level of the atom increases, the number of energy sub-levels per energy level increases.
Elements that occupy the same column on the periodic table (called a "group") have identical valance electron configurations and consequently behave in a similar fashion chemically. For instance, all the group 18 elements are inert gases.
'Father' of the periodic table
Dmitri Mendeleev, a Russian chemist and inventor, is considered the "father" of the periodic table, according to the Royal Society of Chemistry. In the 1860s, Mendeleev was a popular lecturer at a university in St. Petersburg, Russia. Since there were no modern organic chemistry textbooks in Russian at that time, Mendeleev decided to write one, and simultaneously tackle the problem of the disordered elements.
Putting the elements in any kind of order would prove quite difficult. At this time, less than half of the elements were known, and some of these had been given wrong data. It was like working on a really difficult jigsaw puzzle with only half of the pieces and with some of the pieces misshapen.
-Nathania Adora Cahyadi
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