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Question

What is/are the drawbacks of Newland’s Law of Octaves?


A

A, B, C

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B

A, B

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C

A only

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D

C only

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Solution

The correct options are
A

A, B, C


B

A, B


C

A only


The drawbacks of Newland's Law of Octaves are -

  1. The law of octaves was found to be applicable only till calcium. It was not applicable to elements of higher atomic masses.
  2. The position of hydrogen along with fluorine and chlorine was not justified on the basis of chemical properties.
  3. Newlands placed two elements in the same slot to fit elements in the table. He also placed some unlike elements under the same slot. For example, cobalt (Co) and nickel (Ni) are placed in the same slot and in the column of fluorine, chlorine and bromine. But cobalt and nickel have properties quite different from fluorine, chlorine and bromine. Similarly, iron which has resemblances with cobalt and nickel in its properties has been placed far away from these elements.

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