Question

what is Mendaleev law

Answer 1

In 1869, Dmitri Mendeleev and Lothar Meyer individually came up with their own periodic law"when the elements are arranged in order of increasing atomic mass, certain sets of properties recur periodically.

Answer 2

Mendeleev's law states that the chemical and physical properties of the elements recur periodically when the elements are arranged in the order of their atomic weights.

In other words , The law that the properties of the elements are periodic functions of their atomic mass.