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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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davenwago davenwago
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11 years ago
For example, I know that [Flourine] is a negative ion because it's a non metal but how do I know the number of the charge (negative/plus 1, 2, 3 etc)
Ok, but how can I tell with any element?
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#1
11 years ago
Fluorine is the most electronegative element. It is in Group 17 (by the current system) and needs one electron to complete its outer electron shell.Almost always shows up as either -1 or in a covalent compound.
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#2
11 years ago
As an element, fluorine's charge is 0 because it did not take extra or lose electrons (which is the definition of charge).

The most common charge of fluorine is -1. It is in Group 17 so it has 7 valence electrons. It is more likely to gain one electron than to lose 7 electrons to form a complete shell. Gaining one electron means getting one more negative charge = -1.
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