What is the average oxidation number of iron in `Fe_3O_8`? (upto 2 places after decimal)

Answer

5.33

Explanation

$\mathrm {Fe}_ {3} \mathrm {0}_ {8}:$
$3 x+8(-2)=0$ or $3 X-16=0$ or $x=\frac {+16} {3}$
$=+5.33$