Manganese

Atomic number25
Atomic weight54.93805
Discovery (year)1774
Atomic radius (A)1.12C1.50
Melting point (oC)1244
Boiling point (oC)2152
Density (g/cm3)7.42
Specific heat (cal/g oC)0.115
Ionization potential (eV)7.435
Electron Affinity (eV)0