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in P - block elements by (63.7k points)

Alum is found to contain hydrated monovalent cation [M(H2O)6 ] + , trivalent cation [M'(H2O)6 ] 3+ and SO4 2– in the ratio of : 

(A) 1 : 1 : 1 

(B) 1 : 2 : 3 

(C) 1 : 3 : 2 

(D) 1 : 1 : 2

1 Answer

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Best answer

(D) 1 : 1 : 2

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