Determine the correct noble gas electron configuration of a Fe2+ ion using the concepts in electron configuration
Before we can do that, we have to first write the electron configuration of a neutral ground state iron (Fe).
You can determine the ground-state electron configuration of Iron (Fe) by locating the position Fe in the periodic table.
Ground-state means that the element is in its lowest energy form (not in excited state). Neutral Fe means it has no charge, meaning no electrons are removed or added in the atom.
You see in the above illustration of the periodic table that Fe is in Period 4 and d-block
What is the electron configuration for the Fe2+ ion?