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Question

The Law of Octaves' was proposed by:

This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper (8-Mar-2021) (Shift 2)
The correct answer is
Alexander Newlands

Law of Octaves Proposer

The 'Law of Octaves' is a historical step in the development of the periodic table, arranging elements based on their properties.

This law was proposed by Alexander Newlands in 1864.

Newlands observed that when elements were arranged in order of increasing atomic weight, their properties seemed to repeat every eighth element, similar to the musical scale.

Key Contributions of Scientists

  • Alexander Newlands: Formulated the Law of Octaves, noticing periodicity in element properties.
  • Dmitri Mendeleev: Credited with developing the modern periodic table, arranging elements by atomic weight and predicting undiscovered elements.
  • Lothar Meyer: Also developed a periodic table around the same time as Mendeleev, focusing on atomic volume.
  • Johann Dobereiner: Proposed the Law of Triads, grouping elements into sets of three with similar properties.

Newlands' Law of Octaves was an important precursor, although it had limitations and was initially met with skepticism.

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