Is the following ion diamagnetic or paramagnetic?
We are being asked if the species is paramagnetic or diamagnetic so we have to determine the electron configuration of Fe3+ ion.
Recall that paramagnetic species have 1 or more unpaired electrons while diamagnetic contains 0 unpaired electrons.
Write the electron configuration of a neutral (uncharged) Fe atom.
Ground-state means that Iron is in its lowest energy form (not in an excited state).
Neutral element: Atomic number = # protons = # of electrons
Neutral Iron (Fe):
• Atomic number = 26
• # of electrons = 26 e-