Question

Calculate the oxidation number of underlined elements in the following compounds:
$\underset{--}{F{e}_{0.93}}O$

• A. $2.15$
• B. $1.15$
• C. $3.15$
• D. Can't be determined

Answer 1

The correct option is A $2.15$

Let oxidation number of Fe be 'x' in $F{e}_{0.93}O$
$\text{charge on}O=-2$
$\Rightarrow 0.93x-2=0$
$\Rightarrow x=\frac{2}{0.93}=\frac{200}{93}=2.15$