Question

Prussian blue has two types of iron with oxidation number as shown below:
$\stackrel{III}{Fe}\left[\stackrel{II}{Fe}{\left(CN\right)}_6\right]$
What is the net charge on prussian blue?

• A. $-1$
• B. $+1$
• C. $0$
• D. $-2$

Answer 1

The correct option is A $-1$

According to given conditions,
$\stackrel{III}{Fe}\left[\stackrel{II}{Fe}{\left(CN\right)}_6\right]$
Sum of the charges = $+3+2-6\times 1=-1$.
Therefore, net charge on compound is $-1$.