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 d

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.

TestHub · Accepted Answer

The chlorides of both beryllium and aluminium have Cl– bridged chloride structure in vapour phase. Both the chlorides are soluble in organic solvents and are strong Lewis acids. They are used as Friedel Craft catalysts.
${Be}_{2} {Cl}_{4}$ is lewis acid and ${Al}_{2} {Cl}_{6}$ has complete octet.
$Be$ and $Al$ are amphoteric metals therefore dissolve in acid as well as alkaline solution and form beryllate and aluminate ions in excess alkali.
Beryllium hydroxide dissolves in excess of alkali to give a beryllate ion, $[Be (OH)_{4}]^{2 -}$ just as aluminium hydroxide gives aluminate ion, $[Al {(H_{2} O)}_{2} (OH)_{4}]^{-}$

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