Dmitri Mendeleev and Lothar Mayer (independently).
I can find only two types The Mendeleves Periodic table based on Atomic weight of elements and The Modern Periodic table based on Atomic number of elements.
Metal is located throughout the periodic table. The periodic table is based on atomic weight. Metals range from some of the lightest to the heaviest of elements.
Mendeleev arranged the periodic table according to increasing atomic mass. This method has been used since he first developed it in the 1800s.
The large number on the periodic table is the atomic number. There is a smaller number that is the atomic weight. For example, Titanium's atomic number is 22 and its atomic weight is 47.867.
atomic no
Platinum has a relative atomic weight of 195.09(you will not find 5.09 anywhere else on a periodic table.)
No element has an atomic weight of 19.32 on the periodic table.
The periodic table is a chart that organizes elements based on their properties and atomic structure. Mendeleev's table was an earlier version of the periodic table that arranged elements by atomic weight and grouped them by similar properties. Mendeleev's table also left gaps for undiscovered elements, predicting their properties accurately.
The modern periodic table is arranged according to the elements' atomic numbers.
Mendeleev's Periodic Table was based on the periodic law which states that the properties of elements are a periodic function of their atomic masses. This law changed with the discovery of atomic number by Moseley which stated that the properties of elements are a periodic function of their atomic numbers, leading to a more accurate and modern periodic table based on atomic number.
Atomic Number
The periodic table is based on an element's atomic number, which is the number of protons in the nucleus of an atom. Elements are arranged in order of increasing atomic number, which also dictates their unique placement in the periodic table.