both will stabilise the higher oxidation states but the higher oxidation state of metal with is more stable because oxygen will gain 2 electrons from metal atom but the fluorine gains only 1 electron leading to the formation of . The bond between metal and non-metal will be strong when the metal is able to lose more electrons to non metal so the higher oxidation state stabilizes the compound. Hence, statement I is true. The compounds of xenon fluorides like , cannot be explained using valence bond theory because in valence bond theory we take valence electrons into consideration but in compounds of xenon we have lone pair of electrons which affect the shape of a molecule. So, the compounds of xenon are explained by valence shell electron pair repulsion theory. Hence, statement II is true.