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) A. [Co(NCS)(NH3)5](SO3) 1. + 4 B. [Co(NH3)4Cl2]SO4 2. 0 C. Na4[Co(S2O3)3] 3. + 1 D. [Co(CO)8] 4. + 2 5. + 3 Code:

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) A. [Co(NCS)(NH3)5](SO3) 1. + 4 B. [Co(NH3)4Cl2]SO4 2. 0 C. Na4[Co(S2O3)3] 3. + 1 D. [Co(CO)8] 4. + 2 5. + 3 Code: (A) A -(1), B -(2), C -(4), D -(3) (B) A -(4), B -(3), C -(2), D -(1) (C) A -(5), B -(1), C -(4), D -(2) (D) A -(5), B -(1), C -(2), D -(3)

Tardigrade Admin · Accepted Answer

A → (5), B → (1), C → (4), D → (2)

Column I (Compound)		Column II (Oxidation state of $C o$ )
A.	$[C o (NCS) (N H_{3})_{5}] (S O_{3})$	1.	$+ 4$
B.	$[C o (N H_{3})_{4} C l_{2}] S O_{4}$	2.	$0$
C.	$N a_{4} [C o (S_{2} O_{3})_{3}]$	3.	$+ 1$
D.	$[C o (CO)_{8}]$	4.	$+ 2$
		5.	$+ 3$

A -(1), B -(2), C -(4), D -(3)

A -(4), B -(3), C -(2), D -(1)

A -(5), B -(1), C -(4), D -(2)

A -(5), B -(1), C -(2), D -(3)

A→(5),B→(1),C→(4),D→(2)

$A \to (5), B \to (1), C \to (4), D \to (2)$