Assertion : $B e C l_{2}$ (monomer) cannot be easily hydrolysed. Reason: $B e C l_{2}$ is electron deficient compound.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect but Reason is correct

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
$B e C l_{2}$ forms polymeric structure. In polymeric structure, $B e$ is bonded to four $C l$ atoms. Since Be has two valency electrons and $C l$ has only one so here, three centre bonds are formed in which a banana shaped molecular orbital covers three atoms $B e - C l - B e$ and contains two electrons. And due to this structure it can not be easily hydrolyzed.

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Assertion :BeCl2 (monomer) cannot be easily hydrolysed. Reason: BeCl2 is electron deficient compound.

Assertion : $B e C l_{2}$ (monomer) cannot be easily hydrolysed. Reason: $B e C l_{2}$ is electron deficient compound.