Periodic Trends Periodic Trends Electron configurations are able
Periodic Trends
Periodic Trends Electron configurations are able to cause periodic variations in elemental properties. . .
Periodic Trends Valence electrons - electrons that may be lost/gained/shared when chemical compounds are formed
Periodic Trends Valence electrons �Period As we go across a period, the number of valence electrons increases.
Periodic Trends Valence electrons �Group As we go down a group, we find that the number of valence electrons stays constant.
Periodic Trends Size of the atomic radius – onehalf the distance between the nuclei of identical atoms joined in a molecule
Periodic Trends Size of the atomic radius – �Period As we go across a period, the general trend is for the atomic radii to decrease.
Periodic Trends Size of the atomic radius – �Group As we go down a group, there is a general increase in atomic radii. This happens because we are seeing more and more energy levels being added.
Periodic Trends Ionization energy – energy required to overcome nuclear attraction and remove an electron from a gaseous element
Periodic Trends Ionization energy �Period As we go across a period, the general trend is for the ionization energy to increase.
Periodic Trends Ionization energy �Group As we go down a group, there is a general decrease in ionization energy.
Periodic Trends Electronegativity - measure of the power of an atom in a chemical compound to attract electrons
Periodic Trends Electronegativity �Period As we go across a period, the general trend is for the electronegativity to increase.
Periodic Trends Electronegativity �Group As we go down a group, there is a general decrease in electronegativity.
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