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lonization Energy The energy required to remove an electron from an atom is ionization energy (measured in kilojoules, kJ) . The larger the atom is, the easier its electrons are to remove lonization energy and atomic radius are inversely proportional. lonization energy is always endothermic, meaning that the atom or molecule increases its internal energy (takes energy from an outside source) that is energy is added to the atom to remove the electron.
IONIZATION ENERGY electron released lonization Energy is energy needed to remove an oute valence electron energy needed ionization energy . 1st IE energy required to remove 1st e- 2nd IE energy required to remove 2 e- 3rd IE energy required to remove 3 e
Factors Affecting lonization Energy Nuclear Charge The larger the nuclear charge, the greater the ionization energy. Shielding effect The greater the shielding effect, the less the ionization energy. Radius The greater the distance between the nucleus and the outer electrons of an atom, the less the ionization energy. Sublevel An electron from a full or half-full sublevel requires additional energy to be removed.
Trend for lonization Energy lonization energy increases as you go from the left to the right across a period this means it's MORE DIFFICULT to remove an electron because of increased positive nuclear charge lonization energy decreases as you go down a group this means it's EASIER to remove an electron because as atomic radius increases, outermost electrons are further away from nucleus.
Increases onization Energyy
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