Input interpretation
potassium | first ionization energy
Result
418.8 kJ/mol (kilojoules per mole)
Periodic table location
Periodic table location
Unit conversions
0.4188 MJ/mol (megajoules per mole)
418800 J/mol (joules per mole)
100.1 kcal/mol (thermochemical kilocalories per mole)
4.341 eV (molar electronvolts)
Comparisons as molar ionization energy
≈ ( 0.18 ≈ 1/6 ) × molar energy required to remove the first electron from helium ( 2372 kJ/mol )
≈ 1.1 × molar energy required to remove the first electron from cesium ( 377 kJ/mol )