Newland Law of Octave


 
 
Concept Explanation
 

Newland Law of Octave

Newlands’ Law of Octaves (1866):

In 1866, John Newlands’, an English scientist, arranged the known elements in the order of increasing atomic masses and found that every eighth element had properties similar to that of the first. He compared this to the octaves found in music, i.e. sa, ga, ma, pa, da, ni. And in the west, they use the notations — do, re, mi, fa, so, la, ti. Therefore, he called it the law of octaves. This is known as Newlands’ Law of Octaves.

Limitations

  • This law was applicable only upto calcium. After calcium, every eighth element do not possess the same properties similar to that of the first.
  • Newland assumed that there were only 56 elements existed in nature and no more elements would be discovered in the future. But, later on, several new elements were discovered, whose properties did not fit into the Law of Octaves.
  • One more drawback is that, in order to fit elements into his table, Newlands’ adjusted two elements in the same slot and also put some unlike elements under the same column. e.g. cobalt and nickel are in the same slot and these are placed in the same column as fluorine, chlorine and bromine which have very different properties than these elements. Iron, which resembles cobalt and nickel in properties, has been placed far away from these elements.
  • Sample Questions
    (More Questions for each concept available in Login)
    Question : 1

    In 1866, ________________________, an English scientist, arranged the known elements in the order of increasing atomic masses and found that every eighth element had properties similar to that of the first.

    Right Option : C
    View Explanation
    Explanation
    Question : 2

    In 1866, John Newlands’, an English scientist, arranged the known elements in the order of increasing ___________________.

    Right Option : B
    View Explanation
    Explanation
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