Elemental specimen Molybdenum Mo (25mm cube, stamped A, normal surface)

[Product Overview] 99.95% purity, 25mm cube. [Identification] (Front) [Atomic number, element symbol, English name], (Back) [Purity, atomic weight] [Appearance and characteristics] Has a slightly dark silver luster. Heavier than iron, has a density similar to lead. [Storage and handling] If exposed to air for a long period of time, the surface will gradually oxidize, darken in color, and lose luster. If it is only slightly damaged, it can be cleaned by immersing it in a citric acid solution for about 30 seconds. [Other] Comes with a dedicated glass case.