Newlands’ law of octaves was a hypothesis proposed by John Newlands, a British chemist, in 1865.
It says that when elements are arranged in order of their atomic masses, every eighth element has similar properties to the first one.
Newlands’ law of octaves can be explained as follows:
Newlands’ law of octaves was not widely accepted at the time, as many elements did not fit into his pattern. Newland’s system of classification failed to explain similarities in higher elements.