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discovered by Johann Gahn in 1774 by heating pyrolusite with charcoal
'''Manganese''' is an [[element]] in the "transition metals" class of the [[periodic table of the elements|periodic table]]. It is hard and brittle. It reacts (slowly) with water, and with acids.
'''Manganese''' is an [[element]] in the "transition metals" class of the [[periodic table of the elements|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.
Manganese was discovered by [[Johann Gahn]] in 1774 by heating [[pyrolusite]] with [[charcoal]].
[[Category:Elements]]
[[Category:Elements]]