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Do you think Newland's law of octav...

Do you think Newland's law of octaves is correct ? Justify .

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No, there are some limitations of Newlands'medel :
(1 ) There are instances of two elements fitted into the same slot , Eg : Cobalt and Nickel .
(2 ) Certain elements , toally dissimilar in their properties , were fitted into the same group
(3 ) Law of octaves holds good only for the elements up to calcium .
(4 ) Newlands' Periodic table was restricted to only 56 elements and did nnot leave any room for new elements .
(5 ) Newlands had taken consideration about active pattern sometimes without caring the similarities .
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