Promethium Pillows
Description: A gripping Promethium design. Promethium, originally prometheum, is a chemical element with the symbol Pm and atomic number 61. All of its isotopes are radioactive; it is one of only two such elements that are followed in the periodic table by elements with stable forms, a distinction shared with technetium. Chemically, promethium is a lanthanide, which forms salts when combined with other elements. Brought to you by Periodic-Tees.com
Description: A dark brown square with white text featuring the element symbol 'Pm' prominently. It includes the element's name 'Promethium', atomic number '61', atomic mass '535.49 (145)', electron configuration '[Xe] 6s² 4f5', and 'Lanthanide'. Oxidation states '+3' and '+2' are displayed vertically.
