English Vocabulary Flash Cards - Chemical Formulas @ englishpdf.com and englishteststore.com File 113 F6Xe xenon hexafluoride F7I iodine fluoride F7NS pentafluorosulfanyldifluoroamine F7Re rhenium heptafluoride F8Si3 octafluorotrisilane F10Mo2 molybdenum fluoride F10S2 sulfur fluoride F15Mo3 molybdenum fluoride