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Topic Content:
- Ionization EnergyEnergy is the ability to do work. Energy exists in several forms such as heat, kinetic or mechanical energy, light, potential energy, and electrical energy. Units of Energy: The SI unit... More
- Atomic Parameters That Influence Ionization Energy
- Distance of the Outer Electron From the Nucleus
- Size of the Positive Nuclear Charge
- The Screening [Scheduling] Effect of the Inner Electron
This is the energy required to remove the most loosely bound electrons from a gaseous atom to form a positive ion. The process is endothermic.
The first ionization energy of an element is the amount of energy required to remove one electron from each atom in a mole of gaseous atoms, producing one mole of gaseous ions with a positive charge.
The value of energy depends on the energy level and sub-level occupied by the electron in its lowest state and also the nuclear charge.
For example, sodium has 11 electrons 2, 8, 1 and lithium has 3 electrons
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