Input interpretation
![iron | first molar ionization energy](../image_source/42caefc9c2cc08e457ec177845fa0abd.png)
iron | first molar ionization energy
Result
![762.5 kJ/mol (kilojoules per mole)](../image_source/bc83f799dad82ddb83b43c0270c11a53.png)
762.5 kJ/mol (kilojoules per mole)
Unit conversions
![0.7625 MJ/mol (megajoules per mole)](../image_source/820464602d3ee05bff0cb2c99cc9617a.png)
0.7625 MJ/mol (megajoules per mole)
![762500 J/mol (joules per mole)](../image_source/ae921d1914322a502c35e59b998bb0b7.png)
762500 J/mol (joules per mole)
![182.2 kcal/mol (thermochemical kilocalories per mole)](../image_source/a4c29c6b467fd75bf33d0493498498ff.png)
182.2 kcal/mol (thermochemical kilocalories per mole)
![7.903 eV (molar electronvolts)](../image_source/b255ccd739d9fb8139d01e86890e0623.png)
7.903 eV (molar electronvolts)
Comparisons as molar ionization energy
![≈ 0.32 × molar energy required to remove the first electron from helium ( 2372 kJ/mol )](../image_source/ef11de907b2a60d0f9d834f5121d221e.png)
≈ 0.32 × molar energy required to remove the first electron from helium ( 2372 kJ/mol )
![≈ 2 × molar energy required to remove the first electron from cesium ( 377 kJ/mol )](../image_source/09d78f39e7419a1ae71c8ff0ff482d0a.png)
≈ 2 × molar energy required to remove the first electron from cesium ( 377 kJ/mol )