1 HFB Hexafluorobenzene 1.000 2 F5B 1,2,3,4,5-pentafluorobenzene 0.917 3 BBF 1-bromo-2,3,4,5,6-pentafluorobenzene 0.846 4 BCF 1-chloro-2,3,4,5,6-pentafluorobenzene 0.846 5 IBF 1,2,3,4,5-pentafluoro-6-iodobenzene 0.846 6 QFZ 2,3,4,5,6-pentakis(fluoranyl)phenol 0.846 7 PFB 2,3,4,5,6-pentafluorobenzyl alcohol 0.786