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Compare Iron vs Manganese

Comparing Iron (Fe) and Manganese (Mn). Atomic numbers 26 and 25 with atomic masses 55.845 u and 54.938 u, classified as transition metal and transition metal. Below: a side-by-side comparison of their physical, atomic, electron-configuration and historical properties, including density, melting and boiling points, ionization energies, oxidation states and discovery history.

vs
Fe
Iron
#26
Mn
Manganese
#25

Periodic properties of the elements

IronManganese
SymbolFeMn
Atomic number2625
Group87
Period44
Blockdd
Element categoryTransition MetalTransition Metal

Physical properties

IronManganese
Phase at STPSolidSolid
Density7.874 g/cm37.21 g/cm3
Atomic weight55.8452 u54.938 u
Melting point1811 K
1537.85 °C
2800.13 °F		1519 K
1245.85 °C
2274.53 °F
Boiling point3134 K
2860.85 °C
5181.53 °F		2334 K
2060.85 °C
3741.53 °F

Atomic properties

IronManganese
Electronegativity (Pauling Scale)1.831.55
Electron affinity14.785 kJ/mol-50 kJ/mol
Oxidation states−4, −2, −1, 0, +1, +2, +3, +4, +5, +6, +7
(an amphoteric oxide)		−3, −2, −1, 0, +1, +2, +3, +4, +5, +6, +7
(depending on the oxidation state, an acidic, basic, or amphoteric oxide)
Ionization energies
  1. 762.5 kJ/mol
  2. 1561.9 kJ/mol
  3. 2957 kJ/mol
  4. 5290 kJ/mol
  5. 7240 kJ/mol
  6. 9560 kJ/mol
  7. 12060 kJ/mol
  8. 14580 kJ/mol
  9. 22540 kJ/mol
  10. 25290 kJ/mol
  11. 28000 kJ/mol
  12. 31920 kJ/mol
  13. 34830 kJ/mol
  14. 37840 kJ/mol
  15. 44100 kJ/mol
  16. 47206 kJ/mol
  17. 122200 kJ/mol
  18. 131000 kJ/mol
  19. 140500 kJ/mol
  20. 152600 kJ/mol
  21. 163000 kJ/mol
  22. 173600 kJ/mol
  23. 188100 kJ/mol
  24. 195200 kJ/mol
  25. 851800 kJ/mol
  26. 895161 kJ/mol
  1. 717.3 kJ/mol
  2. 1509 kJ/mol
  3. 3248 kJ/mol
  4. 4940 kJ/mol
  5. 6990 kJ/mol
  6. 9220 kJ/mol
  7. 11500 kJ/mol
  8. 18770 kJ/mol
  9. 21400 kJ/mol
  10. 23960 kJ/mol
  11. 27590 kJ/mol
  12. 30330 kJ/mol
  13. 33150 kJ/mol
  14. 38880 kJ/mol
  15. 41987 kJ/mol
  16. 109480 kJ/mol
  17. 118100 kJ/mol
  18. 127100 kJ/mol
  19. 138600 kJ/mol
  20. 148500 kJ/mol
  21. 158600 kJ/mol
  22. 172500 kJ/mol
  23. 181380 kJ/mol
  24. 785450 kJ/mol
  25. 827067 kJ/mol

Electron configuration

IronManganese
Shorthand configuration[Ar] 3d6 4s2 [Ar] 3d5 4s2
Full configuration1s2 2s2 2p6 3s2 3p6 3d6 4s2 1s2 2s2 2p6 3s2 3p6 3d5 4s2
Electrons per shell2, 8, 14, 22, 8, 13, 2

History

IronManganese
DiscoveryMiddle East (5000 BC)Carl Wilhelm Scheele (1774)
First isolationJohann Gottlieb Gahn (1774)
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