CHM120H5 Midterm: Term Test II -- Concepts, Theories, Rules, Principles, ETC

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3 Mar 2017

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Ionization energy is the minimum amount of energy required to remove the most loosely bound electron to a neutral isolated gaseous atom in the ground state. If more energy is required the electron will move at a faster speed. ** paired electrons are removed more easily because they repel each other which reduced the attraction of the nucleus. **period 2 ionization energies are lower than period 3. This is because of the decrease in the size of the atoms. As the size decreases, the electrons are well held by the nucleus energy. As the table progresses from left to right, more electrons are added, however there are also more protons added, this causes an increase in the nucleus energy, which results in an increase in ionization energy. As the first electron is removed from a neutral isolated gaseous atom at ground state, the electron:proton ratio increases.

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