Why did Mendeleev receive the Copley Medal?

Dmitri Mendeleev received the Copley Medal in 1887 for his groundbreaking work in chemistry, particularly for his formulation of the Periodic Law and the development of the Periodic Table of Elements. His ability to predict the properties of undiscovered elements based on their position in the table was a significant advancement in the field. The Copley Medal, awarded by the Royal Society of London, recognized his contributions to scientific knowledge and his influence on the understanding of chemical behavior and relationships among elements.