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Salts of metals X, Y and Z are electrolysed under identical condition using same quantity of electricity . Ifwas observed that 4.2 g of X, 5.4 g of Y and 19.2 g of Z were deposited at respetive cathode . Ifthe atomic weights of X , Y, Z are 7, 27 and 64 respectively , then their ratio of valencies is |
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Answer» `1:2:3` |
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