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Atomic Radius The distance from the center of the nucleus to the outer most electron.
Atomic radius increases down a group because There is more energy levels.
Atomic radius decreases across a period because There are more protons pulling on the electrons.
Ionization energy The energy needed to remove electron.
Ionization energy decreases down a group because The atom is bigger so the electron is easier to remove.
Ionization energy increases across a period because The atom is smaller so the electron is harder to remove.
Electronegativity The ability to attract more electrons.
Electronegativity decreases down a group because its harder to attract when its bigger.
Electronegativity increases across a period because Its easier to attract when its smaller.
Metal reactivity increases down a group and decreases across a period because Its easier to lose electrons if its bigger/ if the atomic radius is bigger
Nonmetal reactivity decreases down a group and increases across a period because Its easier to gain electrons if its small/ if the atomic radius is smaller
Created by: zacharytb19
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