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Unformatted text preview: down a group in the periodic table As the principle quantum increases the size of both the parent atom and the ion will increase How does the nuclear charge affect ion size? Consider the following collection of ions: ion electrons protons O 2-10 8 F-10 9 Na + 10 11 Mg 2+ 10 12 Al 3+ 10 13 Each ion: contains the same number of electrons (10; with configuration 1s 2 2s 2 2p 6 ) and are thus termed a collection of isoelectronic ions varies in the nuclear charge The radius of each ion decreases with an increase in nuclear charge: Oxygen and fluorine precede neon and are nonmetals , sodium, magnesium and aluminum come after neon and are metals ....
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- Fall '10