Verified Solution • 2025–26 Session moderate

QJEEM24Chaccb: JEE Main 2024 Chemistry - Class 12 JEEM24Chaccb Solution: Given below are two statements: Statement I : Group 13…

Given below are two statements:

Statement I : Group 13 trivalent halides get easily hydrolyzed by water due to their covalent nature.

Statement II : AlCl3\mathrm{AlCl}_3 upon hydrolysis in acidified aqueous solution forms octahedral [Al(H2O)6]3+\left[\mathrm{Al}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+} ion.

In the light of the above statements, choose the correct answer from the options given below :

Multiple Choice Options

  • A Statement I is false but statement II is true
  • B Both statement I and statement II are true
  • C Both statement I and statement II are false
  • D Statement I is true but statement II is false

Step-by-Step Verified Solution

In trivalent state most of the compounds being covalent are hydrolysed in water. Trichlorides on hydrolysis in water form tetrahedral [M(OH)4]−\left[\mathrm{M}(\mathrm{OH})_4\right]^{-} species, the hybridisation state of element M\mathrm{M} is sp3\mathrm{sp}^3 .

In case of aluminium, acidified aqueous solution forms octahedral [Al(H2O)6]3+\left[\mathrm{Al}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+} ion.

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