Here's how to determine the oxidation state of iron (Fe) in ferrous chloride:

* Chlorine (Cl) always has an oxidation state of -1 in its compounds.

* The overall charge of the compound is zero.

Let x be the oxidation state of Fe. We can set up an equation:

x + 2(-1) = 0

Solving for x:

x - 2 = 0

x = +2

Therefore, the oxidation state of iron (Fe) in ferrous chloride is +2.