The oxidation states of iron atoms in compounds (A), (B) and (C), respectively, are x, y and z. Then sum of x, y and z is
(A)
(B)
(C)

Question

The oxidation states of iron atoms in compounds (A), (B) and (C), respectively, are x, y and z. Then sum of x, y and z is 
(A) 
(B) 
(C)

Canvas Classes · Accepted Answer

Strategy:
 Use standard rules to calculate oxidation states, setting the sum of all components to the target charge.

Step 1: Analyze (A) 
- : 4(+1) = +4. Complex charge is -4.
- Ligands:  is -1,  is structurally considered to carry a -1 charge in this specific thiourea-like derivative context (Nitroprusside with S).
- .

Step 2: Analyze (B) 
- : 4(+1) = +4. Complex charge is -4.
- Ligand:  is an oxide, -2.
- .
(Wait, literature points Ferrate structures out differently, but calculating strictly

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