Q.

Correct statement regarding B2H6 and Al2Cl6

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a

Both have three centred two electron bonds

b

Hybridisation of 'B' in B2H6 is sp2 where as Al in Al2Cl6 is sp3 hybridised

c

B2H6 has hydrogen bridge bonds and Al2Cl6 has halogen bridging

d

Both have two centred three electron bonds

answer is C.

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Detailed Solution

In Al2Cl6  two coordinate covalent bonds and 6 covalent bonds are present.In diborane two BH2 groups are in one plane and two bridged hydrogens are in perpendicular to the BH2 plane, therefore diborane is a non planar molecule and the central atom boron undergoes sp3 hybridisation.
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