Editing Paramagnetism (section)

====d and f electrons====
Stronger magnetic effects are typically only observed when d or f electrons are involved. Particularly the latter are usually strongly localized. Moreover, the size of the magnetic moment on a lanthanide atom can be quite large as it can carry up to 7 unpaired electrons in the case of [[gadolinium]](III) (hence its use in [[MRI]]). The high magnetic moments associated with lanthanides is one reason why [[rare-earth magnet|superstrong magnets]] are typically based on elements like [[neodymium]] or [[samarium]].