The Basis Of Mendeleev's Periodic Table

The basis of Mendeleev’s periodic table was categorizing the elements according to their physical and chemical characteristics with regard to their atomic weights. Mendeleev was the first to come up with a structure for the periodic table with columns and rows. There were other scientists who have worked on tabulating information of the elements even before Mendeleev, however, he was the first scientist to come up with a periodic trend to predict the properties of elements which were not discovered at that time. Therefore, Mendeleev’s periodic table had empty spaces/gaps, so that these elements, once found can be then included. Gallium and Germanium were two such elements. Also in some cases, Mendeleev didn’t strictly follow the rule of ordering …show more content…
They were both are organized by groups and families. Some of the main differences between the modern periodic table and the Mendeleev’s periodic table is that the Mendeleev's table arranged the elements in order of atomic weight while the modern table ordered elements by increasing their atomic number. For the most part of the periodic table, the order of the elements is the same as both tables between, but there are exceptions to some parts of the periodic table. Mendeleev realized that the Chemical and physical properties were related to their atomic mass with the periodic Way, and arranged them for the groups of elements with all the similar properties fell into vertical columns in the table. And when they were all discovered, Mendeleev turned out to be right. The periodic table now has room for up to 118 elements, they aren’t discovered or created in the order of their atomic number. Scientist are trying to make it to where 120 elements on the periodic table, but that will make the way the periodic table looks. Although, people expect the atoms of the elements to get as large or larger than their atomic number increases, this doesn’t occur because of the of the atom is determined by its diameter of the electron shell. Fact is, element atoms decrease in size as you move from left to right or across a row or period. Determining the weights scientists had passes currents through various solutions that would break them up into the constituent atoms. They responded to a battery polarity, atoms of one of the elements would go thisaway, and then the other atoms would go to another thataway. They were collected in different containers and then the atoms got weighted. In the periodic table today we have different groups of the metals and other things to make