Q.
In Al2Cl6, the covalency of aluminium is
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a
6
b
4
c
3
d
2
answer is B.
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Detailed Solution
→ 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.
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