Which of the following set of elements obeys Newland's octave rule?

  1. A

    Na,K, Rb

  2. B

    F, Cl, Br

  3. C

    Be, Mg, Ca

  4. D

    B, Al, Ga

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    Solution:

    Following Newland's octave rule, Be, Mg, and Ca.

    When chemical elements are organised in order of increasing atomic weight, those with similar physical and chemical properties follow every interval of seven elements, according to Newland's octave rule.

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