Question

The correct statement about iron includes
(I) the highest oxidation state of iron is $+6$ in $K_{2}Fe{O}_4$
(II) that the iron shows $+2$ oxidation state with six electrons in the $3d$ orbitals
(III) the common oxidation state of iron is $+3$ with five unpaired electrons in the $3d$ orbital

• A. $I,II,III$
• B. $I,II$
• C. $II,III$$
• D. $I$ only

Answer 1

The correct option is A $I,II,III$

(I) the highest oxidation state of iron is +6 in K2FeO4

(II) that the iron shows +2 oxidation state with six electrons in the 3d orbitals

(III) the common oxidation state of iron is +3 with five unpaired electrons in the 3d orbital

given all statement are correct

so A is correct option