Newlands arranged the known elements in increasing order of their atomic masses and proposed the Law of Octaves. According to him, every eighth element showed properties similar to the first. At the time of his classification, only 56 elements were known, and he included all of them in his periodic table.
The correct option is (C): \(56\)
List-I | List-II | ||
(A) | mI | (I) | Shape of orbital |
(B) | ms | (II) | Size of orbital |
(C) | I | (III) | Orientation of orbital |
(D) | n | (IV) | Orientation of spin of electron |