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Question

How many geometrical isomers are possible in [Al(C2O4)3]3āˆ’ ?

A
0
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B
2
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C
3
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D
4
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Solution

The correct option is A 0
Oxalate is a bidentate and symmetrical ligand. Three oxalate gives CN=6 to Al and forms an octahedral shape.
It is of the type [M(AA)3].
AA- bidentate symmetrical ligand

Since ligands are same, the structure of the complex will be same, such that no isomers are possible for this structure.
Option A is the correct answer

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