Sodium's first ionization energy is 495 kJ / mol.
The first ionization energy is 1681 kJ/mol.
Helium has the highest ionization energy.
Fluorine has the largest first ionization energy among the halogens.
Fluorine has the largest first ionization energy among the halogens.
ionization potential energy. but remember the atom must be neutral .
Across a row on the periodic table ionization energy increases. Down a column, ionization energy decreases. --------------------------------------------------------- The first Ionization energy of Boron is 800.6 kJ mol-1
The ionization energy (first) of einsteinium is 619 kJ/mol.
The first ionization energy for carbon is 1 086,5 kJ/mol. The first ionization energy for oxygen is 1 319,9 kJ/mol.
The estimated first ionization energy of mendelevium is 635 kJ/mol.
The estimated first ionization energy of rutherfordium is 579,9 kJ/mol.
When electronegativity decrease the first ionization energy also decrease.
Barium has more energy levels. So it has lesser ionization energy.