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In Al2Cl6, the covalency of aluminium is
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a
6
b
4
c
3
d
2
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Correct option is B
→ Sizes of Al and Cl are large, therefore in between the Al and Cl "π" bond formation is not possible.→In order to get octet configuration around the "Al" AlCl3 undergoes dimerisation and forms Al2Cl6 dimer AlCl3 achieves stability by forming a dimer Al2Cl6.In the dimer around the Al four fonds are present and the covalency of Al in Al2Cl6 is four.Similar Questions
The bond dissociation energy of BF bond in BF3 is 646 kJ mol–1 whereas that of CF in CF4 is 315 kJ mol–1. The correct reason for higher BF bond dissociation energy as compared to that of CF bond is :
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