Question

state newlands law of octaves for classification of elements

Answer 1

Law of octaves, in chemistry, the generalization made by the English chemist J.A.R. Newlands in 1865 that, if the chemical elements are arranged according to increasing atomic weight, those with similar physical and chemical properties occur after each interval of seven elements.

Answer 2

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$\large\underline{Newlands\:Law\:of\:Octaves:-}$

✔️ In 1866, he arranged then known elements in order of increasing atomic masses.

✔️ He started with element having low atomic mass,hydrogen and ended up in the thorium which was the 56th element.

✔️ He found that every eight element had properties similar that of the first.

✔️ He compared this to the octaves found in music.

✔️ Therefore, he called it the “Law of Octaves”. It is known as “Newland’s Law of Octaves”.

Example:-

The Properties of Lithium and sodium are similar. Sodium is the eight element after Lithium.

Hope it helps you!!