Input interpretation
![fluorine | first ionization energy](../image_source/71c3ef9cfc66f1574982546567946955.png)
fluorine | first ionization energy
Result
![1681 kJ/mol (kilojoules per mole)](../image_source/168e0f408390981875d71b9abf42985e.png)
1681 kJ/mol (kilojoules per mole)
Periodic table location
![Periodic table location](../image_source/7d7cf0bd542d2014e1acf813369c59ec.png)
Periodic table location
Unit conversions
![1.681 MJ/mol (megajoules per mole)](../image_source/87373fb2b12cf4971029476d15677aae.png)
1.681 MJ/mol (megajoules per mole)
![1.681×10^6 J/mol (joules per mole)](../image_source/08999f1aed988a5769f1ff60ed6abdab.png)
1.681×10^6 J/mol (joules per mole)
![401.77 kcal/mol (thermochemical kilocalories per mole)](../image_source/e75e400dd4301bd44ff52219876819d3.png)
401.77 kcal/mol (thermochemical kilocalories per mole)
![17.422 eV (molar electronvolts)](../image_source/d59ef1bdde15f29572a285177757087a.png)
17.422 eV (molar electronvolts)
Comparisons as molar ionization energy
![≈ 0.71 × molar energy required to remove the first electron from helium ( 2372 kJ/mol )](../image_source/47efccc441d5ad2041baf39087208a2b.png)
≈ 0.71 × molar energy required to remove the first electron from helium ( 2372 kJ/mol )
![≈ 4.5 × molar energy required to remove the first electron from cesium ( 377 kJ/mol )](../image_source/22899056e36ac732c23b82f6af8012c9.png)
≈ 4.5 × molar energy required to remove the first electron from cesium ( 377 kJ/mol )