Question

Whay are limitation of Newland law of octave​

Answer 1

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The limitations of Newland's Law of Octaves were :-

➊ The law is applicable only to the elements up to calcium.

➋ Newlands assumed that only 63 elements existed in nature and no more elements were discovered.

➌ Some like elements have been separated from each other whereas some unlike elements have been placed in the same column. For example, Fe, CO and Ni have almost similar properties but placed in different column, instead of that halogens (F, Cl, Br) were placed in the same column.

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Answer 2

Explanation:

Limitations of Newlands' law of octaves:

→ It was not applicable throughout the arrangements. It was applicable up to calcium only. The properties of the elements listed after calcium showed no resemblance to the properties of the elements above them.

→ Those elements that were discovered after Newlands' octaves did not follow the law of octaves.

→ The position of cobalt and nickel in the group of the elements (F, Cl) of different properties could not be explained.

→ Placing of iron far away from cobalt and nickel, which have similar properties as iron, could also not be explained.