write a short note on Dobereiners triads
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Dobereiner's triads were an early attempt to sort the elements into some logical order by their physical properties. In 1817, a letter reported Johann Wolfgang Dobereiner's observations of the alkaline earths; namely, that strontium had properties that were intermediate to those of calcium and barium.
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heylooo here is ur answer
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dobereiner groped the element in three with similar properties such that the atomic weights of the middle element was the arithmetic mean of the other two..
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