What is social advertising? what kind of messages does social advertising advertise?
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Neon is part of the Noble Gases group and Fluorine is part of the Halogens group. Fluorine is a small atom and has a small nucleus because it is highly charged. ... Once it gets the borrowed electron it requires then it becomes non-reactive like Neon. Fluorine and Neon are both on the second period of the periodic table.
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