Writing Resources
There are many scientists and inspirational people whose actions and discoveries all contributed to the build up of today s periodic table Today s table is broken down into element s atomic number periodic trends electron configurations and recurring chemical properties The main periodic trends in the table are the atomic radius ionization energy electronegativity and electron affinity Atomic radius patterns are observed throughout the periodic table and atomic size gradually decreases from left to right across a period of elements This is because within a period or family of elements all electrons are added to the same shell Why is the periodic table so important Well the table is very useful for today's scientists and students as it helps to predict the types of chemical reactions that are likely for any element that has been found There are many patrons that supported the creation of today s periodic table but the four scientists that have been very crucial it is Dmitri Mendeleev Henry Moseley William Ramsay and Lothar Meyer Lothar Meyer In 1864 five years before the first announcement of a Periodic System by Mendeleev Lothar Meyer had produced a table of just 28 elements
