Up to which element was the Law of Octaves fo | vedclass

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(A) John Newlands,an English scientist,arranged the then-known elements in the order of increasing atomic masses and found that every eighth element h

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Calcium

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(A) John Newlands,an English scientist,arranged the then-known elements in the order of increasing atomic masses and found that every eighth element had properties similar to the first.This was known as the Law of Octaves.However,this law was found to be applicable only up to Calcium $(Ca)$,which is the $20^{th}$ element in the periodic table.After Calcium,every eighth element did not possess properties similar to the first.

Up to which element was the Law of Octaves found to be applicable?

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