SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Johann W. Dobereiner propose the Law of Octaves
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True
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False
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Either A or B
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None of the above
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Explanation:
Detailed explanation-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.
Detailed explanation-2: -This law was found to be applicable only to calcium. It was not applicable to elements of higher atomic masses. The position of hydrogen along with fluorine and chlorine was not justified on the basis of chemical properties.
Detailed explanation-3: -The law of octaves states that every eighth element has similar properties when the elements are arranged in the increasing order of their atomic masses.
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