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Dobereiner's triads - class-XI
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According to the law of triads :
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the properties of the middle element were in between those of the other two members.
💡 Explanation:
According to Dobereiner's law of triads, the properties of the middle element were in between those of the other two members. The elements were arranged in a group of three (called triads). The atomic weight of a middle element was almost the average of the other two. Three elements of the triad had similar chemical properties.