explain newlands law of octaves
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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.
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Newlands Law Octaves
Chemistry
Newlands Law Octaves
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State Law of Octaves
According to the law of octaves, each eighth element in the periodic table shares likewise physical and chemical properties. Thus, each element in the parallel row must have similar physical and chemical properties. But this is not true. The periodicity is only valid till calcium. An example of the Law of Octaves is lithium, sodium, and potassium; they share physical and chemical properties. Similarly, Mg is the eighth element to be. Hence, both elements share the same physical and chemical properties. The remaining elements after potassium (Cu, Rb, Ag, and a few more) are different. Those elements do not show similarities to the former elements. This is the reason why the law of octaves fails to incorporate transition metals.
Explain Newlands Law of Octaves
While ordering the elements in increasing order of their atomic masses, the eighth element’s properties are similar to that of the first.
Examples:
The eight elements of lithium are sodium. Similarly, eight elements from sodium are potassium, lithium, sodium, potassium have similar chemical properties.
The eighth element from fluorine is chlorine. Fluorine and chlorine have similar chemical properties.
Newland’s law of octaves states that when elements are ordered according to their increasing atomic mass, the properties of every eighth element are the same as the first.
Law of Octaves Was Proposed By
In chemistry, the law of octaves was proposed by the English chemist J.A.R. Newlands in 1865. Newlands was one of the first to notice a periodic pattern in the elements’ properties and predicted later developments of the periodic law.
Newlands Law Was Named the Law of Octaves.
In 1866, he observed that when elements were arranged to increase atomic masses, there was much similarity in the properties of every eighth element like the musical notes do, re, me, etc. Newland named this repetition as the law of octaves.