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manganese [Mn]
From the Latin magnesia meaning magnet. Isolated in 1774 by the Swedish chemist Johan Gottlieb Gahn.
Occurrence:
1) large amounts are present in the ocean floor
Characteristics:
1) a grayish-white usually hard & brittle metallic element that resembles iron, but is not magnetic
2) reactive when pure
a) burns in oxygen
c) reacts with water
3) dissolves in dilute acids
4) imparts color to amesthyst gemstones
Uses:
1) essential trace element for humans
2) used in alloys
-> in steel, improves strength & workability
3) used in ceramics & dry cell batteries
Related
manganese in specimen
Mn+2
periodic table
General
trace element
metal
Properties
SIZE: AW = 54.938
atomic number
VALUE: 25
VALENCE: AR 3D5 4S2
Database Correlations
PUBCHEM correlations
References
- Webster's Ninth New Collegiate Dictionary, Miriam-
Webster Inc. Springfield, MA 1990
- Chemical & Engineering News, Sept 8, 2003
Component-of
ascorbate/cobalamin/copper/copper sulfate/ferrous fumarate/folic acid/magnesium sulfate/manganese/manganese sulfate/nicotinamide/pantothenate/pyridoxine/riboflavin/thiamine/zinc sulfate
cobalamin/magnesium sulfate/manganese/manganese sulfate/nicotinamide/panthenol/pyridoxine/riboflavin/thiamine/zinc sulfate
copper/copper sulfate/manganese/manganese sulfate/zinc sulfate