Chemistry, asked by sharnaya, 1 year ago

what were the reasons for the failure of newland's law of octave

Answers

Answered by kukigaha
44
limitations of newlands law of octaves:
1)this law was applicable up-to calcium only.
2)Newland places two elements in the same slot in table.
3) this law was not for the elements of higher atomic masses.
4)it was not applicable throughout the arrangements.
hope this helps you ^_^

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Answered by Róunak
32
Hey mate..
========

What is the history behind Newland's law of Octaves ?

Let us dicuss :--

>> When the attempts of a well known chemist Doberiener failed to classify the known elements into different groups.

>> It encouraged most of the other chemist's to correlate the properties of elements with their atomic masses.

>> In 1866, John Newland, an English scientist arranged the then known elements in order of increasing atomic masses. He started with the element having lowest atomic mass and ended at thorium which was the 56th element. He found that every 8th element has properties similar to that of the first. He compared with the octaves in music. Therefore, he called it "Newland's law of Octaves"

>>In Newland's law of Octaves, the properties of lithium and sodium were found to be the same. Sodium is the eighth element after lithium. Similarly, beryllium and Magnesium resemble each other.

>> Thus, These gave rise to anomalies in Newland's Periodic table. And thus, we came to know about three reasons which Newland failed to make out behind his creation of Octaves :---

1] It was found that the Newlands law of Octaves was applicable only upto calcium, as after calcium every 8th element did not possess properties similar to that of the first.

2] It was assumed by Newland's that only 56 elements existed in nature and no more elements would be discovered in future but later on many new elements were discovered whose properties didn't fit into Newland's law of Octaves.

3] In order to fit elements into his table, Newland's adjusted two elements in the same slot but he also put some unlike elements under the same note.

Thus, We can say that Newland's Law of Octaves worked well with lighter elements only.

Hope it helps ™

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