Manganese
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| Manganese | |
|---|---|
| Properties | |
| Atomic symbol | Mn |
| Atomic number | 25 |
| Classification | Transition metal |
| Atomic mass | 54.938 amu |
| Number of Stable Isotopes | 1 |
| Density (grams per cc) | 7.440 g/cm^3 |
| Other Information | |
| Date of discovery | 1774 |
| Name of discoverer | Johann Gahn |
| Name origin | From the Latin word mangnes (magnet) |
| Uses | Steel, batteries, ceramics, coins, fertilizer and animal feed additives |
| Obtained from | Pyrolusite, psilomelane, cryptomelane, manganite, rhodochrosite |
Manganese is an element in the "transition metals" class of the periodic table. It is hard and brittle. It reacts (slowly) with water, and with acids.
Manganese was discovered by Johann Gahn in 1774 by heating pyrolusite with charcoal.