Promethium Magnets
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.
Promethium Pm 61 Lanthanide Magnet
by STEPHEN CHOU STD
$3.75 $4.75
Description: A black background with bold white text. The words "HEAVY METALS" are prominent in the center. To the left are "MANGANESE" and "ARSENIC". To the right are "PROMETHIUM" and "VANADIUM". Below "HEAVY METALS" is a unique symbol and the word "MERCURY".
Heavy Metals With Chemical Elements Magnet
by NDR KIWIS STUDIO
$3.75 $4.75