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State Dobereiner law of triads giving ex...

State Dobereiner law of triads giving examples.

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Dobereiner made groups of there elements each, having similar chemical properties and called them triads. He arranged the three elements in a triad in an increasing order of atomic mass and showed that the atomic mass of the middle element was approximately equal to the mean of the atomic masses of the other elements.
Examples : Lithium (Li), Sodium (Na), Potassium (K) from Dobereiner's tried.
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State Dobereiner's law of triads. Give an example.

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Knowledge Check

  • Dobereiner triad is

    A
    Na, K, Rb
    B
    Mg, S, As
    C
    Cl, Br, I
    D
    P, S, As

  • Example of Dobereiner's triad is

    A
    Li, Al, Ca
    B
    Li, Na, K
    C
    Li, K, Na
    D
    K, Al, Ca

  • The law of triads is applicable to

    A
    Hydrogen, oxygen, nitrogen
    B
    Chlorine , bromine, iodine
    C
    Sodium, neon, calcium
    D
    None

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    . . .. .. . .. ... of the following triads does not follow Dobereiner 's law of triads.

    Dobereiner triad is:

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