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Manganese (Mn): Fun Facts and Information About the Element


What is the symbol? Mn
What is the atomic number? 25
What is the atomic weight? 54.938
What is the melting point in Celsius? 1245
What is the boiling point in Celsius? 1962
What is the density (g/cm3)? 7.43
What percent of the earths crust? 0.09
What year was it discovered? 1774
Who discovered the element? Johan Gottlieb Gahn
What group is the element in? 7
What is the electron configuration? [Ar] 3d5 4s2
What is the ionization energy? 7.434
What element category is it in? Transition Elements

Where is Manganese Found?

Manganese minerals are widely distributed; oxides, silicates, and carbonates are the most common. The discovery of large quantities of manganese nodules on the floor of the oceans may become a source of manganese. These nodules contain about 24% manganese.

Most manganese today is obtained from ores found in RussiaBrazilAustralia, South Africa, Gabon, and India. Pyrolusite and rhodochrosite are among the most common manganese minerals.

What is Manganese Used For?

The dioxide (pyrolusite) is used as a depolarizer in dry cells, and is used to “decolorize” glass that is colored green by impurities of iron. Manganese by itself colors glass an amethyst color, and is responsible for the color of true amethyst. The dioxide is also used in the preparation of oxygen and chlorine, and in drying black paints. The permanganate is a powerful oxidizing agent and is used in quantitative analysis and in medicine.

Manganese is widely distributed throughout the animal kingdom. It is an important trace element and may be essential for utilization of vitamin B1.