Question

What is the net charge on ferrous ion?

• A. $+2$
• B. $+3$
• C. $+4$
• D. $+5$

Answer 1

Answer: (A)

${}_{26}Fe\to [Ar]3d^{6}4s^2$
$F{e}^{++}\to [Ar]3d^{6}4S^0$
$F{e}^{+++}\to [Ar]3d^{5}4S^0$
In +2 state Fe is called ferrous and in +3 state as ferric