Question

Two elements each in some boxes : Limitations in Newlands’ octaves :

Place for isotopes : ________________________________




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Answer 1

Explanation:

(1) Newland's law of octaves i.e, applicable to only the first few elements' i.e, only up to calcuium out of total 56 elements known at that time. (2) Newlands placed two elements each in some boxes to accommodate all know elements e.g, Co and Ni, Ce and La.

He placed some elements with different propterties under the same note in the octave. For exmaple , Co and Ni under the note Do along with halogens, while Fe having similarity with Co and Ni away from them along with halogens, while Fe having similarity with Co and Ni away from them along with the nonmetals O and S under the note Ti. <br> (3) Newlands' octaves did not have provision to accommodate the newly discovered elements.

Answer 2

Answer:

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