The elements that are naturally magnetic (ferromagnetic) are primarily iron (Fe), cobalt (Co), and nickel (Ni). These elements can be strongly magnetized and retain their magnetism even after removing an external magnetic field. Additionally, some alloys and compounds containing these elements, such as steel and stainless steel, are also magnetic. There are also some rare earth elements that exhibit magnetic properties under specific conditions, but iron, cobalt, and nickel are the main naturally magnetic elements at room temperature.