Question

State Newland’s Law of Octaves.

Answer 1

‌We must bear in mind of the very fact that the question is expounded to periodicity of elements or classification of elements. Newlands was the first person to plot a tabular array of chemical elements arranged so as of their relative atomic masses.

Complete step by step answer:
Newlands law of Octave states that when elements are arranged by increasing atomic masses the properties of each element ranging from any element are repetition of the properties of the starting element.
Newland wrote a statement that elements are arranged within the order of their equivalents, with some slight transpositions, as within the accompanying table, it'll be observed that elements belonging to the identical group usually appear on the identical horizontal line.
Law of octave was true just for the elements only upto calcium.
This was love octaves found in music (SA,RE,GA,MA,PA,DHA,NI) and hence was called the ‘Law of Octaves’ or ‘Newlands’ Law of Octaves’.
Lithium and sodium share the identical physical and chemical properties.
Similarly, Mg is the eighth element to Be, hence both share the identical physical and chemical properties.

Note: Matter is classed into solids, liquids and gases. However this can be not the sole way of classification of the matter. it's also classified into elements, compounds and mixtures supported composition.Various laws were introduced like Triaid law, Mendeleev’s Law etc.
One of the limitations was that it absolutely was assumed that only 63 elements existed in nature and no new elements would be discovered within the future. But afterward several new elements were discovered whose properties didn't fit into the law of octaves