Q.

The correct structural formula of potassium tri oxalato aluminate (III) is

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a

K3AlC2O43

b

K3AlC2O42

c

K2AlC2O42

d

K2AlC2O43

answer is A.

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Detailed Solution

Oxalato is C2O4-2 ;oxidation state of ‘Al’ is “+3”∴ the formula of the anionic complex is AlC2O43−3To compensate the negative charge, 3K+ ion are required.∴ the formula of te complex is K3AlC2O43 .
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