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     EduGorilla 
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    Salts of A (atomic weight 7), B (atomic weight 27) and C (atomic weight 24) were electrolysed under identical conditions using the same quantity of electricity. It was found that when 2.1 g of A was deposited, the weights of B and C deposited were 2.7 g and 3.6 g, respectively. The respective valencies of A, B and C are

    Options :-

    1. 2, 3 and 2
    2. 3, 1 and 3
    3. 6, 2 and 3
    4. 2, 3 and 1
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