Question

Explain Newland's law of octaves with Limitations

Answer 1

NEWLAND'S LAW OF OCTAVES

john newland an english scientist arranged the elements on the basis of increasing atomic masses

he observed that the property of every 8th element taken in order of increasing atomic masses showed similar physical and chemical properties

he compared this to the octaves found in musical notes

this was called Newland's Law of octaves

LIMITATIONS

1. the law of octaves was only applicable till calcium
2. newland assumed that only 56 elements are there in the nature and when new elements were discovered he could not arrange them in law of octaves
3. he also put unlike elements in the same. slot For example - co and ni were placed in same slot and fe which resembles these were placed far from this

Answer 2

Answer:

Newlands arranged the then known elements in the increasing order of atomic masses. After arranging, he found that every eighth element had similar properties as that of the first. He compared it to octaves found in music and therefore named them Newlands' Law of Octaves.

Limitations:-

1. Newlands' Law of Octaves worked for lighter elements as after calcium, every eighth element didn't had similar properties as that of the first

2. He said that only 53 elements existed and no more elements will be discovered in future.

3. He put some elements in same column which didn't had any similar properties. For example- He put Cobalt and Nickel in the same column as fluorine, chlorine and bromine. Iron, which had a lot more similarities to Cobalt and nickel had been placed far away.