Periodic Table of Elements showing Manganese transition elements





Manganese

ElementManganese
SymbolMn
Atomic Number25
Molar Mass54.94 gmol-1
Electron Configuration[Ar]3d54s2
Normal Statesolid metal
Density @STP7.47 g cm-3
Melting Point1246oC
Boiling Point2061oC
Stable Isotopes55Mn
Atomic Radius137 pm
Ionic Radius91 (2+) pm
Electronegativity (Pauling)1.55
Ionization Energy (1st)717 kJ mol-1
Ionization Energy (2nd)1509 kJ mol-1
Ionization Energy (3rd)3248 kJ mol-1
Molar Heat Capacity26.3 J K-1mol-1
Standard Molar Entropy32 J K-1mol-1
Enthalpy of Fusion14.4 kJ mol-1
Enthalpy of Vapourization219.7 kJ mol-1
[Back to Periodic table]



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