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)
P. [Co(NCS)(NH₃)₅](SO₃)
1.+4
Q. [Co(NH₃)₄Cl₂]SO₄
2.0
R. Na₄[Co(S₂O₃)₃]
3.+1
S. [Co₂(CO)₈]
4.+2

5.+3

Question

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)
P. [Co(NCS)(NH₃)₅](SO₃)	1.+4
Q. [Co(NH₃)₄Cl₂]SO₄	2.0
R. Na₄[Co(S₂O₃)₃]	3.+1
S. [Co₂(CO)₈]	4.+2
	5.+3

TestHub · Accepted Answer

P has Co +3, Q +4, R +2 and neutral [Co₂(CO)₈] has Co 0. NCERT prints (i); corrected here to (iii) per Rahul’s ruling.

Chemistry - Coordination Chemistry Question with Solution | TestHub