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State and explain Doberiner's Triad (ii) Complete the following equation Na_(2)O_(2) + ul(?) rarr Na_(2)SO_(4)+H_(2)O_(3) |
Answer» Solution :Johann Dobereiner noted that ELEMENTS with similar properties occur in groups of three which he called TRIADS. It was seen that invariably, the atomic weight of the middle number of the TRIAD was nearly equal to the arithmetic mean of the weights of the other two numbers of the triad. For e.g.,  (ii) `Na_(2)O_(2) + underset("Sulphuric acid ")(H_(2)SO_(4)) RARR Na_(2)SO_(4)+ underset("HYDROGEN peroxide")(H_(2)O_(2)` |
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