NEET2019ChemistryCoordination CompoundsActual
Aluminium chloride in acidified aqueous solution forms a complex ' A ', in which hybridisation state of Al is ' B '. What are ' A ' and ' B ', respectively?
Options
- A[ Al ( H ₂ O )₆ ]³⁺, sp ^3 d^2
- B[ Al ( H ₂ O )₄ ]³⁺, s p^3
- C[ Al ( H ₂ O )₄ ]³⁺, d s p^2
- D[ Al ( H ₂ O )₆ ]³⁺, d^2 s p^3
Correct answer
A. [ Al ( H ₂ O )₆ ]³⁺, sp ^3 d^2
Step-by-step solution
Aluminium chloride in acidified aqueous solution forms an octahedral complex. Aqueous solution is mostly water and when the compound is dissolved in acidified aqueous solution, the water fills its vacancies and an octahedral complex, ' A ^ which is [ Al ( H ₂ O )₆ ]³⁺ is formed. Thus, the hybridisation state of Al in [ Al ( H ₂ O )₆ ]³⁺ is sp ^3 ~d ^2( ~B ) .