This means that less energy is needed to remove the outermost electron and therefore the ionisation energy is lower. In terms of atomic structure explain why Al has a larger atomic radius than Si. Why Is Strontium Ionization Enthalpy More Than Potassium Quora The outer electron in Potassium is in the 4 s orbital which is further away from the nucleus than the 3 s orbital of the Sodium. . You would have thought that the electrostatic attraction. Potassium reacts much more violently with water. The first ionization energy is the energy required to remove an electron from a neutrally charged gas atom. Na IE Na e IE 51391 eV. Despite smaller atomic number sodium is denser than potassium. This energy is usually expressed in kJmol or the amount of energy it takes for all the atoms in a mole to lose one electron each. Potassium vs Sodium. Ionization energy is the quantity of energy that an isolated gaseous atom i...
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