Question

explain ' newland's law of octaves.' why was the law discarded?

Answer 1

Newland arranged the elements in the increasing order of their atomic mass and observe that properties of every 8th element was similar to the 1st element.

This law was discarded because
This rule was valid only hoti Ca because after Ca due to the presence of d block element there is a difference of 18 elements instead of 8 elements.

Answer 2

Answer:

It was discarded because:

1. This classification did not work with heavier elements,i.e. those lying beyond calcium.

2. Newland adjusted two elements cobalt and nickel in the same slot and these were placed in the same column as flourine , chlorine, and bromine which have different properties than these elements.

3. Iron, which resembles cobalt and nickel in properties has been placed far away from these elements.

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