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Q. The formula of brown ring complex compound in $[Fe(H_{2}O)_{5}NO^{+}]SO_{4},$ What is the oxidation number of $Fe$ ?

Rajasthan PMTRajasthan PMT 2001Redox Reactions

Solution:

$[Fe(H_{2}O)_{5}NO^{+}]SO_{4}$
$x+0+1-2=0$
$x=+1$