Home 25 Mn Mangenese back to the periodic table

Atomic number   25
Symbol   Mn
Atomic weight   54.93805
Density [g/cm3]   7.44
Melting point [°C]   1244
Boiling point [°C]   2097
1st Ionization energy [eV]   7.435
Electronic configuration   [Ar] 3d5 4s2
Oxidation number (most stable)   7, 6, 4, 3, 2, 0, 1-
Atomic radius [pm]   124
Ionic radius [pm]   82 (2+)
Abundance in crustal rocks [ppm]   1060
Origin of the name   (lat.) magnes = magnetically, in order to avoid mistaking, it was renamed later in manganese
Discovery   1774 by Gahn
Uses   to the deoxidation of iron and steel (ferro-manganese), as alloying constituent in steel (manganese steel), as corrosion protection for phosphatizing as well as for the production of metal soaps.

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© 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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