Input interpretation
![alkaline earth metals | first molar ionization energy](../image_source/6611cadb2a9e6a60706236620d50eaf5.png)
alkaline earth metals | first molar ionization energy
Summary
![median | 569.6 kJ/mol highest | 899.5 kJ/mol (beryllium) lowest | 502.9 kJ/mol (barium) distribution |](../image_source/ee1ef4b13f23b7cd85b07d295fe2aafd.png)
median | 569.6 kJ/mol highest | 899.5 kJ/mol (beryllium) lowest | 502.9 kJ/mol (barium) distribution |
Units
Ranked values
![| | visual | ratios | 6 | barium | | 0.559 | 1 5 | radium | | 0.566 | 1.013 4 | strontium | | 0.611 | 1.093 3 | calcium | | 0.656 | 1.173 2 | magnesium | | 0.82 | 1.467 1 | beryllium | | 1 | 1.789](../image_source/ee3204fdc0ac7731be13e7dac4573227.png)
| | visual | ratios | 6 | barium | | 0.559 | 1 5 | radium | | 0.566 | 1.013 4 | strontium | | 0.611 | 1.093 3 | calcium | | 0.656 | 1.173 2 | magnesium | | 0.82 | 1.467 1 | beryllium | | 1 | 1.789
First molar ionization energy rankings
![1 | barium | 502.9 kJ/mol 2 | radium | 509.3 kJ/mol 3 | strontium | 549.5 kJ/mol 4 | calcium | 589.8 kJ/mol 5 | magnesium | 737.7 kJ/mol 6 | beryllium | 899.5 kJ/mol](../image_source/2ef4b03ee266b4c1a327829f0e67438a.png)
1 | barium | 502.9 kJ/mol 2 | radium | 509.3 kJ/mol 3 | strontium | 549.5 kJ/mol 4 | calcium | 589.8 kJ/mol 5 | magnesium | 737.7 kJ/mol 6 | beryllium | 899.5 kJ/mol
Unit conversions for median first molar ionization energy 569.6 kJ/mol
![0.5696 MJ/mol (megajoules per mole)](../image_source/fe593f670219c24679ac85feb233a3d6.png)
0.5696 MJ/mol (megajoules per mole)
![569600 J/mol (joules per mole)](../image_source/18bca18f1e6fe04bc6b9278844ec9e15.png)
569600 J/mol (joules per mole)
![136.1 kcal/mol (thermochemical kilocalories per mole)](../image_source/74e7fbba8b880c994ee76b3767784ddc.png)
136.1 kcal/mol (thermochemical kilocalories per mole)
![5.904 eV (molar electronvolts)](../image_source/96039bbf1d462aebac5e29bb644bd494.png)
5.904 eV (molar electronvolts)
Comparisons for median first molar ionization energy 569.6 kJ/mol
![≈ ( 0.24 ≈ 1/4 ) × molar energy required to remove the first electron from helium ( 2372 kJ/mol )](../image_source/00d0e43b96b3e21e9f43527c2deb5bbc.png)
≈ ( 0.24 ≈ 1/4 ) × molar energy required to remove the first electron from helium ( 2372 kJ/mol )
![≈ 1.5 × molar energy required to remove the first electron from cesium ( 377 kJ/mol )](../image_source/41a8aefa44a216cace2882b9c5bf68d9.png)
≈ 1.5 × molar energy required to remove the first electron from cesium ( 377 kJ/mol )