A) the ionisation energy of aluminium is high.
B) it cannot form trimer.
C) high coordination number can obtain by aluminium.
D) aluminium belongs to third group.
Correct Answer: C
Solution :
Aluminium (III) chloride forms a dimer \[(A{{l}_{2}}C{{l}_{6}})\]because aluminium can obtain high coordination number.You need to login to perform this action.
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