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the number of neutrons is calculated as the atomic mass weight subtracted by the number of protons. Currently, the chemical element fluorine has 9 neutrons.
http://answers.ask.com/Science/Chemistry/how_many_...
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Neutrons have the same mass as a proton but lack an electrical charge. The number of neutrons can be found by subtracting the atomic number, or number of protons in the atom, from
http://wiki.answers.com/Q/The+number+of+neutrons+f...
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there are nine neutrons in flourine.
http://wiki.answers.com/Q/How_many_neutrons_are_fo...
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Number of neutrons = Mass number - atomic number = 23 - 9 = 14.
http://wiki.answers.com/Q/How_many_neutrons_are_in...
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