This pie chart categorizes elements by their magnetic behavior: diamagnetic (repelled by magnets), paramagnetic (weakly attracted), ferromagnetic (strongly magnetic), or antiferromagnetic.

Most elements are diamagnetic - their paired electrons create no net magnetic moment. Only three elements are ferromagnetic at room temperature: iron, cobalt, and nickel, all with unpaired d-electrons that align spontaneously. Antiferromagnetic materials like chromium have electrons that align in opposing directions.