Addition of excess aqueous ammonia to a pink coloured aqueous solution ofandgives 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 ?

Addition of excess aqueous ammonia to a pink coloured aqueous solution

1.	Addition of excess aqueous ammonia to a pink coloured aqueous solution ofandgives 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 ?
Answer» The hybridisation of the central metal ion in Y is `d^(2)sp^(3)` Addition of silver NITRATE to Y gives only two equivalents of silver chloride When X and Z are in equilibrium at `0^(@)`C , the colour of the solution is pink Z is a TETRAHEDRAL complex. Solution :