The brown ring complex is formulated as\[[Fe{{({{H}_{2}}O)}_{5}}NO]S{{ – McqOptions

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1.	The brown ring complex is formulated as\[[Fe{{({{H}_{2}}O)}_{5}}NO]S{{O}_{4}}\]. The oxidation number of iron is
A.	1
B.	2
C.	3
D.	0
Answer» B. 2

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