Why was the law of octaves for the classification of elements discarded?

Elements were arranged in increasing order of their atomic weights.

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Elements were arranged in series of eight.

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Properties of every eighth element were found to be a repetition of the first element.

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It failed to accommodate the heavier elements.

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Solution

The correct option is D
It failed to accommodate the heavier elements.

Newland, an English scientist gave the law of octaves which states that: When elements are arranged in an increasing order of atomic masses every eighth element beginning from any element resembles the first element in its physical and chemical properties. This method was discarded since it failed to accommodate the heavier elements and also failed to leave spaces for undiscovered elements.

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Similar questions

Q. According to Newlands' law of octaves, the elements were arranged in the increasing order of their atomic masses.

Which of the following was true for Newland's Law of Octaves and his periodic table?

(i) He arranged the elements in increasing order of their atomic weights.
(ii) Every eighth element had properties similar to the first element. The relationship was just like every eighth note that resembles the first note in the octaves of music.
(iii) He didn't take noble gases into account.
(iv) None of the above

Newland arranged elements in increasing order of atomic weights and noted that every eighth element had properties similar to:

Q. Arrange the following statements in a chronological order.
(a) Some elements be grouped in set of three elements in the increasing order of their atomic weights in which the atomic weight of the middle element was found to be the arithmetic mean of the atomic weights of the other two elements.
(b) The physical and chemical properties of elements are periodic functions of their atomic numbers.
(c) The physical and chemical properties of elements are periodic functions of their atomic weights.
(d) When elements are arranged in the increasing order of their atomic weights, the eighth element resembles the first in physical and chemical properties just as the eighth note on a musical scale resemble the first one.

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

(A) The law of octaves was found to be applicable only till calcium. It was not applicable to elements of higher atomic masses.

(B) Some unlike elements were placed in same column

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