Manganese vs Iron

Side-by-side comparison of Manganese (Mn, element 25) and Iron (Fe, element 26) by atomic structure and physical properties.

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PropertyMn Manganese Fe Iron
Atomic number2526
SymbolMnFe
NameManganeseIron
Categorytransition-metaltransition-metal
Standard Atomic Weight54.938044 u55.845 u
Period44
Group78
Blockdd
Phase at STPSolidSolid
Electron configuration[Ar]3d54s2[Ar]3d64s2
Oxidation states[-3, -1, 0, 1, 2, 3, 4, 5, 6, 7][-4, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7]
Electronegativity (Pauling)1.551.83
Electron affinity-0.5 eV0.153236 eV
Density7300 kg/m³7874 kg/m³
Melting point1245.85 °C1537.85 °C
Boiling point2060.85 °C2860.85 °C
Discovery year1774N/A

Key Differences

PropertyMn ManganeseFe Iron
Standard Atomic Weight54.938044 u ↓ lower55.845 u ↑ higher
Density7300 kg/m³ ↓ lower7874 kg/m³ ↑ higher
Melting point1245.85 °C ↓ lower1537.85 °C ↑ higher
Boiling point2060.85 °C ↓ lower2860.85 °C ↑ higher
Electronegativity (Pauling)1.55 ↓ lower1.83 ↑ higher
Electron affinity-0.5 eV ↓ lower0.153236 eV ↑ higher
Group7 8
Electron configuration[Ar]3d54s2 [Ar]3d64s2