Boron trichloxide e exist as monomer why aluminium trichloxide exist as dimer why
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the monomeric trihalides, being electron deficient, are strong lewis acids. boron triflouride easily reacts with lewis bases such as NH3 to complete octet around boron.
since the d orbitals are available with Al and other elements, the max. covalence can be beyond 4. Most of the other metal halides(Alcl3) are dimerised through halogen bridging(Al2cl6). The metal species completes its octet by accepting electrons from halogen in these halogen bridged molecules.
since the d orbitals are available with Al and other elements, the max. covalence can be beyond 4. Most of the other metal halides(Alcl3) are dimerised through halogen bridging(Al2cl6). The metal species completes its octet by accepting electrons from halogen in these halogen bridged molecules.
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