Question

Given below are two statements.
Statement I : The chlorides of Be and Al have Cl-bridged structure. Both are soluble in organic solvents and act as Lewis bases.
Statement II : Hydroxides of Be and Al dissolve in excess alkali to give beryllate and aluminate ions.
In the light of the above statements, choose the correct answer from the options given below.

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

Answer 1

The correct option is C Statement I is false but Statement II is true

Chlorides of Be and Al are
$BeC{l}_2$ and $AlC{l}_3$ and they have electron deficiency at central atom and behave as the Lewis acids.

$BeC{l}_2+H_{2}O⟶\underset{\left[\text{beryllate ion}\right]}{\left[Be\right(OH{)}_4{]}^{2-}}$

$AlC{l}_3+H_{2}O⟶\underset{\left[\text{aluminate ion}\right]}{\left[Be\right(OH{)}_4{]}^{-}}$