Among the following,the correct statement(s) | vedclass

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(B) . $Al_2(CH_3)_6$ (dimer of $Al(CH_3)_3$) contains $Al-C-Al$ bridges which are $3c-2e$ bonds.$B$. $B_2H_6$ (dimer of $BH_3$) contains $B-H-B$ bridg

Vedclass · Accepted Answer

$A, B, D$

Vedclass · Answer

(B) . $Al_2(CH_3)_6$ (dimer of $Al(CH_3)_3$) contains $Al-C-Al$ bridges which are $3c-2e$ bonds.$B$. $B_2H_6$ (dimer of $BH_3$) contains $B-H-B$ bridges which are $3c-2e$ bonds.$C$. $Al_2Cl_6$ (dimer of $AlCl_3$) contains $Al-Cl-Al$ bridges,but these are $3c-4e$ bonds (due to lone pairs on $Cl$),not $3c-2e$ bonds.$D$. $BCl_3$ is a stronger Lewis acid than $AlCl_3$ because the back-bonding in $BCl_3$ is less effective than in $AlCl_3$ due to the size mismatch between $B$ $(2p)$ and $Cl$ $(3p)$ orbitals compared to $Al$ $(3p)$ and $Cl$ $(3p)$.Thus,statements $A, B,$ and $D$ are correct.

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