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Q 2977756686.     Addition of excess aqueous ammonia to a pink coloured aqueous solution of `MCl_2 * 6H_2O(X)` and `NH_4Cl` gives an octahedral complex Y in the presence of air. In aqueous solution, complex Y behaves as 1:3 electrolyte. The reaction of X with excess HCl at room temperature results in the formation of a blue coloured complex Z. The calculated spin only magnetic moment of X and Z is 3.87 B.M., whereas it is zero for complex Y. Among the following options, which statement(s) is(are) correct?
JEE 2017 Advanced Paper 1
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