Manganese
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Manganese is a chemical element, having the chemical symbol Mn.
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Its atomic number (the number of protons) is 25. It has a Standard Atomic Weight of 54.938049(9), and is typically found as a solid in its elemental form.
Manganese is considered to be a member of the "Transition metal" class of elements, has a boiling point of 2,061 °C , and a melting point of 1,246 °C .