What is Debereiner’s law of triads ? Explain with the help of one example of a Dobereiner’s triad.
What is Debereiner’s law of triads ? Explain with the help of one example of a Dobereiner’s triad.
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Dobereiner’s law of triads: When elements are arranged in order of increasing atomic masses, groups of three elements (triads), having similar chemical properties are obtained. The atomic mass of the middle elements of the triad being equal to the arithmetic mean of the atomic masses of the other two elements.
For example: Alkali metal group ( Dobereiner’s triad) : Lithium is the 1st element, sodium is the middle element whereas potassium is the 3rd element of the triad.
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