JEE MAIN - Chemistry (2024 - 31st January Evening Shift - No. 4)

Given below are two statements:

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

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

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

Statement I is false but statement II is true

Both statement I and statement II are true

Both statement I and statement II are false

Statement I is true but statement II is false

Explanation

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

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

JEE MAIN - Chemistry (2024 - 31st January Evening Shift - No. 4)

Explanation

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