Question

The brown ring complex compound is formulated as

$\lbrack Fe(H_{2}O)_{5}NO^{+}\rbrack SO_{4}$. The oxidation state of iron is

• A.
  • 1
• B.
  • 2
• C.
  • 3
• D. 0

Answer 1

Answer: (B)

• 2

Answer 2

$\left\lbrack \underline{Fe}(H_{2}O)_{5}NO \right\rbrack SO_{4}$ [Oxidation number of H₂O = 0 ; Oxidation number of NO = 0; Oxidation number of$SO_{4}^{2 -}$=–2]

$x + 0 + 0 - 2 = 0$ or $x - 2 = 0$ or $x = + 2$