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BCl3 does not exist as dimer but BH3 exi...

`BCl_3` does not exist as dimer but `BH_3` exist as dimer because

A

Cl is more electropossitive than H

B

There is `P pi- P pi` back bonding in `BCI_3` but `BH_3` does not contain such multiple bonding

C

Large chlorine atoms do not fit between small sized boron atoms whereas small hydrogen atoms get fitted between boron atoms

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
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