Match the compounds given in Column I with the oxidation state of cobalt present in it (given in Column II) and assign the correct code.
Column I (Compound)
Column II (Oxidation state of Co)
\( \mathrm{P} \)
A. \( \left[\mathrm{Co}(\mathrm{NCS})\left(\mathrm{NH}_{3}\right)_{5}\right]\left(\mathrm{SO}_{3}\right) \)
1
W
B. \( \left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{Cl}_{2}\right] \mathrm{SO}_{4} \)
2. 0
C. \( \mathrm{Na}_{4}\left[\mathrm{Co}\left(\mathrm{S}_{2} \mathrm{O}_{3}\right)_{3}\right] \)
\( 3 .+1 \)
D. \( \left[\mathrm{Co}_{2}(\mathrm{CO})_{8}\right] \)
\( 4 .+2 \)
5
Code :
(i) \( \mathrm{A}(1) \quad \mathrm{B}(2) \quad \mathrm{C}(4) \quad \mathrm{D}(5) \)
(ii) \( \quad \mathrm{A}(4) \quad \mathrm{B}(3) \quad \mathrm{C}(2) \quad \mathrm{D}(1) \)
(iii) \( \mathrm{A}(5) \quad \mathrm{B}(1) \quad \mathrm{C}(4) \quad \mathrm{D}(2) \)
(iv) \( \quad \mathrm{A}(4) \quad \mathrm{B}(1) \quad \mathrm{C}(2) \quad \mathrm{D}(3) \)
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