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

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Understanding +4 | -1

Assertion (A) :

{AlCl}_3

forms dimer

{Al}_2 {Cl}_6

but is dissolves in

{H}_2 {O}

forming

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

and

{Cl}^{-}

ions.

Reason (R) : Aqueous solution of

{AlCl}_3

is acidic due to hydrolysis.

View answer and explanation

Correct option: B

Both

\mathbf{A}

and

\mathbf{R}

are true but

\mathbf{R}

is not the correct explanation of

\mathbf{A}

Option B (Both

\mathbf{A}

and

\mathbf{R}

are true but

\mathbf{R}

is not the correct explanation of

\mathbf{A}

) is correct because both the assertion and reason are true, but the reason does not explain why

AlCl_3

forms a dimer.

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