Question:

Aluminium chloride in acidified aqueous solution forms an ion having geometry:

Updated On: Nov 11, 2024
  • Square planar
  • Tetrahedral
  • Octahedral
  • Trigonal bipyramidal
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The Correct Option is C

Solution and Explanation

Determine the Complex Ion Formed: In acidified aqueous solution, AlCl3 forms a complex ion, typically [Al(H2O)6]3+.
Analyze Geometry: - This complex ion has six ligands (water molecules) coordinated around the central aluminum ion. - Six ligands around a central atom generally form an octahedral geometry.
Conclusion: The geometry of [Al(H2O)6]3+ is octahedral.

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