Addition of excess aqueous ammonia to a pink coloured aqueous solution of MCl_2 * 6H_2O(X) and NH_4Cl gives an octah

### Question Asked by a Student from EXXAMM.com Team

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?

(This question may have multiple correct answers)

A The hybridization of the central metal ion in Y is d^2sp^3
B When X and Z are in equilibrium at 0°C, the colour of the solution is pink
C Z is a tetrahedral complex
D Addition of silver nitrate to Y gives only two equivalents of silver chloride

#### HINT

(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

#### Access free resources including

• 100% free video lectures with detailed notes and examples
• Previous Year Papers
• Mock Tests
• Practices question categorized in topics and 4 levels with detailed solutions
• Syllabus & Pattern Analysis