The modern periodic table has evolved through the early attempts of

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Dobereiner

Newlands

Mendeleev

All of the above

answer is D.

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Detailed Solution

The modern periodic table has evolved through the early attempts of Dobereiner, Newlands, and Mendeleev.
Dobereiner’s triad classified elements into a group of 3 elements called a triad. Triads were advantageous in predicting the properties along with the atomic mass of the middle element of the triad. Newlands’ law of octaves gave an idea about the concept of linking the properties of elements to their atomic masses through a systematic relationship. Mendeleev’s periodic law stated that the properties of an element are the periodic function of its atomic mass and elements were arranged in the periodic table according to their relative masses.

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