Chaitan Singh
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Did Döbereiner’s triads also exist in the columns of Newlands’ Octaves? Compare and find out.

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NCERT Solution for Class 10 Science Chapter 5
Periodic Classification of Elements
NCERT Books for Session 2022-2023
CBSE Board and UP Board
Intext Questions
Page No-81
Questions No-1

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5 Answers

  1. Yes, Dobereiner’s traiads exists in the columns of Newland’s Octaves.
    Example – In the Dobereiner’s triads Lithium, Sodium and Potassium make a triad, and these elements also present in the same column of Newland’s Octaves as these have same properties.

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