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Q: Scientists named Newlands, Mendeleev and Mayer developed ………?
  • A. Metallurgy
  • B. Periodic Table of Contents
  • C. atomic structure
  • D. discovery of elements
Correct Answer: Option B - Scientists named Newlands, Mendeleev and Mayer developed periodic table contents. In the 19th century, several attempts were made to groupsify the elements, including Proust's hypothesis, Doberiner's triad theory, the Duma's equidistant series, Newland's Octave law, etc., in which the atomic weights of the elements in these early attempts to groupsify the elements was made the basis of classification.
B. Scientists named Newlands, Mendeleev and Mayer developed periodic table contents. In the 19th century, several attempts were made to groupsify the elements, including Proust's hypothesis, Doberiner's triad theory, the Duma's equidistant series, Newland's Octave law, etc., in which the atomic weights of the elements in these early attempts to groupsify the elements was made the basis of classification.

Explanations:

Scientists named Newlands, Mendeleev and Mayer developed periodic table contents. In the 19th century, several attempts were made to groupsify the elements, including Proust's hypothesis, Doberiner's triad theory, the Duma's equidistant series, Newland's Octave law, etc., in which the atomic weights of the elements in these early attempts to groupsify the elements was made the basis of classification.