History of chemistry (classification of elements): Newlands, Mendeleev, and Meyer are associated with which foundational development? Recognize the contribution of these scientists to organizing elements and predicting properties. Choose the correct option.

Difficulty: Easy

Atomic structure
Metallurgy
The periodic table
Discovery of individual elements

Correct Answer: The periodic table

Explanation:

Given data

Names: Newlands, Mendeleev, Lothar Meyer.

Concept/Approach
They developed early periodic classifications (Newlands' Law of Octaves; Mendeleev's periodic table with predictions; Meyer's atomic volume periodicity), leading to the modern periodic table.

Final Answer
The periodic table

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