Manganese Facts

Manganese Facts
Manganese (Mn) has an atomic number of twenty-five, and has twenty-five protons in the nucleus of an atom. It exists as a naturally occurring free element, or is often combined with iron.
Interesting Manganese Facts:
Johann Gottlieb Gahn was the first scientist to isolate manganese from pyrolusite in 1774.
Pyrolusite, as it was called, is now known as manganese dioxide.
Cave paintings dating from the Stone Age contained manganese pigments.
Manganese resembles iron, but with a silver gray color.
It is part of the iron group of elements.
It oxidizes easily, but does not fuse easily.
It rusts in a matter very similar to iron in water.
Manganese has ones stable isotope, Mn-55.
There are eighteen known radioactive isotopes of manganese.
The most stable radioisotope is Mn-53, which has a 3.7 million-year half-life.
Manganese dioxide is fairly common in nature.
It is vital for the production of steel, accounting for about 90% of the manganese mined today.
It has also been used for glassmaking, pigments, and production of stainless steel.
Manganese is also used to alloy with aluminium, since it has properties resistant to corrosion.
During World War II, manganese replaced most of the nickel in US coins, as nickel became scarce.
Trace amounts of manganese are important for mitochondrial function in living cells.
The average human body contains about twelve grams of manganese, found mostly in the skeleton.
While manganese is non-toxic in small amounts, its dust can have harmful effects.
Exposure to manganese is covered by OSHA.
Prolonged exposure to manganese , especially in drinking or shower water, has been linked to intellectual impairments, childhood disorders, degenerative diseases, and more.
Manganism is a neurological disorder associated with long-term exposure to manganese.

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