20 points! how many valence electrons does iron (fe) have? how do you know? - i believe it is 2 valence electrons, but i am not sure what proves that.

Iron, or Fe, has 26 electrons, with two electrons in the outer valence shell. Iron is a transition metal and is both lustrous and easy to work with. Iron is also prone to rust, especially in damp environments. Iron is a ferrous metal, meaning that it can be magnetized.

Explanation:

Iron has a valency of 2+

Explanation:

The atomic number for Fe is 26, so that makes the electron configuration 2.8.8.8.2 so if you take the no. of electron it will be 2, so it will have to loose the two electrons in order to fill it's outermost electrons.

So it will develop a valency - 2+

Remember as you loose an electron the valency will be a positive but if you gain an electron the charge will be a negative