Template:Elementbox ionizationenergies4

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 * rowspan="3" valign="top" | Ionization energies
 * rowspan="3" valign="top" | Ionization energies
 * 1st:&thinsp;&thinsp;kJ·mol&minus;1
 * 2nd:&thinsp;&thinsp;kJ·mol&minus;1
 * 3rd:&thinsp;&thinsp;kJ·mol&minus;1
 * 3rd:&thinsp;&thinsp;kJ·mol&minus;1
 * 3rd:&thinsp;&thinsp;kJ·mol&minus;1