Comment: [Sigh] ... Seems the posted article did not argee w/ you. Sorry

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[Sigh] ... Seems the posted article did not argee w/ you. Sorry

The term fluorine (F: Periodic Table of Elements, #9), rather than fluoride was then commonly used in referring to the air pollutant. - citation from the posted historical article
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"If they can't get even these basic chemical facts right, then how are we supposed to trust the rest of the document? Fluorine and Hydrogen Fluoride are completely different. I honestly can't even think of a single thing they have in common. Both are nonflammable gases? That's about all I can think of." - Eric Hoffer
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Seems Merriam Webster's dictionary defines things differently as well.
Definition of FLUORIDE (Merriam Webster's Dictionary)
1. a compound of fluorine
2. the monovalent anion of fluorine

First Known Use of FLUORIDE: 1826

flu·o·ride noun (Merriam Webster's Medical Dictionary)
Medical Definition of FLUORIDE
1. a compound of fluorine with a more electropositive element or radical
2. the monovalent anion of fluorine
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History is oft confusing. I hope we can come to terms with it. Regards,

Disclaimer: Mark Twain (1835-1910-To be continued) is unlicensed. His river pilot's license went delinquent in 1862. Caution advised. Daily Paul