BCl_(3) does not exist as a dimer but BH_(3) exists as B_(2)H_(6) beca

1.	BCl_(3) does not exist as a dimer but BH_(3) exists as B_(2)H_(6) because:
Answer» <P>`Cl_(2)` more electronegatve than hydrogen LARGE size of chlorine atom does not fit between small sized boron atoms while small sized hydrogen atoms OCCUPY the space between boron atoms there is `p pi-d pi` back BONDING in `BCl_(3)` both (B) and (c). Answer :B

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