JEE CHEMISTRY MCQ: 13 TH GROUP ELEMENTS (P-BLOCK)

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Aluminium chloride exists as dimer,

\mathrm{A}{\mathrm{l}_2}\mathrm{C}{\mathrm{l}_6}

, in solid state as well as in solution of non-polar solvents such as benzene. When dissolved in water, it gives

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Correct option: B

{\left[ {\mathrm{Al}{{\left( {{\mathrm{H}_2}\mathrm{O}} \right)}_6}} \right]^{3 + }} + 3\mathrm{C}{\mathrm{l}^ - }

Option B is correct because in water, aluminum chloride undergoes hydrolysis to form the hexaaquaaluminum(III) ion,

{\left[ {\mathrm{Al}{{\left( {{\mathrm{H}_2}\mathrm{O}} \right)}_6}} \right]^{3 + }}

, and chloride ions.

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