Well im not sure. i had lf2 vdbz, lf2, lf2.5,lf4t the only one that didnt work was lf5
lF5
Iodine pentafluoride, IF5, is a fluoride of iodine. It is a colourless or yellow liquid with a density of 3250 kg m−3. It was first synthesized by Henri Moissan in 1891 by burning solid iodine in fluorine gas.[3] This exothermic reaction is still used to produce iodine pentafluoride, although the reaction conditions have been improved.[4][5] An alternative IUPAC name is pentafluoro-λ5-iodane.