The Father of the Periodic Table, Dimitri Mendeleev, proposed the initial version of the Periodic Table. The atomic masses of the elements were used to create this periodic table.
Only half of the elements known to us now were known during his time, and not all of the information regarding elements was complete or correct.
Henry Moseley's current periodic rule provides the basis for the most recent Periodic Table.
Elements' characteristics are periodic functions of their atomic numbers, according to the periodic law.
Therefore, there are 118 elements in the Periodic Table.