Match the complex species given in Column I with the possible isomerism given in Column II and assign the correct code :
Column I (Compl A. \( \quad\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{Cl}_{2}\right]^{+} \)
Column II (Isomerism)
1. optical
B. cis \( \left[\mathrm{Co}(\mathrm{en})_{2} \mathrm{Cl}_{2}\right]^{+} \)
2. ionisation
C. \( \left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{5}\left(\mathrm{NO}_{2}\right)\right] \mathrm{Cl}_{2} \)
3. coordination
D. \( \left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]\left[\mathrm{Cr}(\mathrm{CN})_{6}\right] \)
4. geometrical
5. linkage
Code :
(i) \( \mathrm{A}(1) \quad \mathrm{B}(2) \quad \mathrm{C}(4) \quad \mathrm{D}(5) \)
(ii) \( \mathrm{A}(4) \quad \mathrm{B}(3) \quad \mathrm{C}(2) \quad \mathrm{D}(1) \)
(iii) \( \mathrm{A}(4) \quad \mathrm{B}(1) \quad \mathrm{C}(5) \quad \mathrm{D}(3) \)
(iv) \( \quad \mathrm{A}(4) \quad \mathrm{B}(1) \quad \mathrm{C}(2) \quad \mathrm{D}(3) \)
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