Question 3:
What were the limitations of Newlands’ Law of Octaves?
Answer:
Limitations of Newlands’ law of octaves:
(i) 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.
(ii) Those elements that were discovered after Newlands’ octaves did not follow the
law of octaves.
(iii) The position of cobalt and nickel in the group of the elements (F, Cl) of different
properties could not be explained.
(iv) Placing of iron far away from cobalt and nickel, which have similar properties as
iron, could also not be explained.
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