Periodic Classification of Elements — Science STD 10 — Question
CBSE BoardEnglish MediumSTD 10SciencePeriodic Classification of Elements3 Marks
Question
What is Newlands' law of octaves? Why is it called so?
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Answer
In 1864, Newlands arranged the known 56 elements in the order of increasing atomic masses.He observed that the properties of every eighth element are similar to the properties of the first element.Based on this observation, he proposed the Law of Octaves for the classification of elements. Law of Octaves: When the elements are arranged in the increasing order of their atomic masses, the properties of every eighth element are similar to the first.
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