Mendeleev's Periodic Law

Mendeleev's periodic law states that the properties of chemical elements are periodic functions of their atomic masses. Essentially, when elements are arranged in order of increasing atomic weight, elements with similar properties appear at regular intervals. This arrangement led Mendeleev to create the first periodic table, predicting the existence and properties of undiscovered elements. His work helped establish a systematic way to understand relationships between different elements and laid the foundation for the modern periodic table, which is now organized by atomic number rather than atomic mass.