Question

what are the limitations of newlands law of octaves​

Answer 1

Answer:

The major limitations of Newlands' law of octaves are-

It was applicable to only lighter elements having atomic masses upto 40u, i.e., upto calcium. After calcium, the first and the eighth element did not have similar properties.

Those elements that were discovered after Newland's octaves did not follow the law of octaves.

Some similar elements have been separated from one another while some dissimilar elements have been placed in the same column.

Answer 2

→ Law of Octaves only applicable up to calcium and after calcium every 8th did not possess properties similar to that of the first.

→ At the time of Newlands' only 56 elements were existed in nature and Newlands' assume that no more elements will be discovered the future.

→ But, later on , several new elements were discovered, whose properties did not fit into the law of octaves.

→ One important demerit of Newlands' law that he adjusted two elements in the same slot such as Cobalt and nickel [ Co and Ni ] .

→ With the discovery of noble gases the law of octaves become irrelevant.

→ Newlands' law of Octaves worked well with lighter elements only.