Match the compounds given in Column I with the oxidation state of Cobalt is given in column II and assigns the correct code.
Column I |
Column II |
||
A. | \(\mathrm{Co}(\mathrm{NCS})\left(\mathrm{NH}_3\right)_5\left(\mathrm{SO}_3\right)\) | 1. | +4 |
B. | \(\mathrm{Co}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}_2 \mathrm{SO}_4\) | 2. | +2 |
C. | \(\mathrm{Na}_4 \mathrm{Co}\left(\mathrm{S}_2 \mathrm{O}_3\right)_3\) | 3. | 0 |
D. | \(\mathrm{Co}_2(\mathrm{CO})_8\) | 4. | +3 |
Codes:
A | B | C | D | |
1. | 2 | 3 | 4 | 1 |
2. | 3 | 1 | 5 | 2 |
3. | 5 | 4 | 3 | 2 |
4. | 4 | 1 | 2 | 3 |
Hint: Oxidation state of CO ligand is zero
Calculate the oxidation state of CO in different complexes as follows:
A.
Let oxidation state of Co is x.
B.
Let oxidation state of Co is x
c.
Let oxidation state of Co is x
D.
Let oxidation state of Co is x
Hence, option 4th is the correct answer.
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