Input interpretation
iron | first molar ionization energy
Result
762.5 kJ/mol (kilojoules per mole)
Unit conversions
0.7625 MJ/mol (megajoules per mole)
762500 J/mol (joules per mole)
182.2 kcal/mol (thermochemical kilocalories per mole)
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 )
≈ 2 × molar energy required to remove the first electron from cesium ( 377 kJ/mol )