Answer:
8 valence electrons
Explanation:
First lets start by writing the electron configuration of Fe.
[Fe] ⇒ [Ar] 3d⁶ 4s²
Notice that in the ground state, iron has 6 electrons in its d orbital and 2 electrons in its s orbital.
To find the total valence electrons, add the 4s and 3d orbitals.
2 + 6 = 8 valence electrons Fe
