Who proposed the periodic table which is commonly used today?

The Periodic Table commonly used today was primarily developed by Dmitri Mendeleev in 1869. He arranged the elements based on their Atomic Mass and properties, predicting the existence of undiscovered elements. Although other scientists contributed to its development, Mendeleev's work laid the foundation for the modern periodic table, which is now organized by atomic number due to the later contributions of other chemists, including Henry Moseley.