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Answer 1

Answer:

The major limitations of Newlands' law of octaves were : (i) It was applicable to only lighter elements having atomic masses upto 40 u, i.e., upto calcium. After calcium, the first and the eighth element did not have similar properties.

Explanation:

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Answer 2

Explanation:

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.