"Ferrous" isn't a specific element on the periodic table. It's a term used in chemistry to describe iron (Fe) when it has a +2 oxidation state.

Here's a breakdown:

* Iron (Fe) is a transition metal found on the periodic table.

* Oxidation state refers to the charge an atom would have if all its bonds were ionic.

* Ferrous indicates an iron atom with a +2 charge, meaning it has lost two electrons.

So, while "ferrous" isn't on the periodic table itself, it refers to a specific state of the element iron.