31. "Radical " is the name biochemists give to an atom or molecule with an unpaired electron . 32. It seems to have the least problems when the unpaired electrons are on the same atom. 33. The ion with the largest number of unpaired electrons is Gd 3 + with seven unpaired electrons. 34. The blue color of the pigment is due to the radical anion, which contains an unpaired electron . 35. The ion with the largest number of unpaired electrons is Gd 3 + with seven unpaired electrons . 36. Thus, the transition from localized unpaired electrons to itinerant ones partaking in metallic bonding became more comprehensible. 37. Free radicals are atoms with unpaired electrons . 38. Unlike molecular compounds, the atoms on the edge would have unpaired electrons , so what do they do? 39. The ground electronic state of carbon monoxide is a singlet state since there are no unpaired electrons . 40. Thus an atom with unpaired electrons acts as a magnetic dipole and interacts with a magnetic field.