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Assertion : Only cis-[Pt(NH(3))(2)Cl(2)]...

Assertion : Only cis-[`Pt(NH_(3))_(2)Cl_(2)]` reacts with oxalic acid `(H_(2)C_(2)O_(4))` to form `[PtCl_(2)("ox")]^(2-)`, not the trans isomer.
Reason : The oxalate ion is a bidentate ligand which can occupy adjacent positions only.

A

Mark (I) if both assertion (A) and reason (R ) are correct and (R ) is the correct explanation of (A)

B

Mark (II) if both assertion (A) and reason (R ) are correct and (R ) is not the correct explanation of (A)

C

Mark (III) if (A) is correct but (R ) is incorrect

D

Mark (IV) if (A) is incorrect but (R ) is correct

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