| 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. |
 |
|
|
25 Mn
Mangenese
