MolSynapsequestion bank

MolSynapse / Question bank / p-Block Elements: Groups 17 and 18 / Noble gases: xenon fluorides, oxides and oxyfluorides

JEE Advanced levelOne or more correct optionsDifficulty 3 of 3ph160

Which of the following statements about xenon oxides and oxyanions are correct?

A $XeO X_{3}$ is very stable and non-explosive, so it is safe to isolate in the dry state.
B $XeO X_{3}$ is a pyramidal, explosive solid in which Xe is in the +6 state.
C $XeO X_{4}$ is an unstable gas with tetrahedral molecules and Xe in the +8 state.
DDisproportionation of $HXeO X_{4} X^{-}$ in alkali gives perxenate, Xe and $O X_{2}$ .

Answer: B, C, D

XeO3 is explosive and pyramidal (+6); XeO4 is an explosive gas, tetrahedral (+8); and

2 HXeO X_{4} X^{-} + 2 OH X^{-} XeO X_{6} X^{4 -} + Xe + O X_{2} + 2 H X_{2} O

is correct. The last statement is false because dry XeO3 detonates easily.

Practice p-Block Elements: Groups 17 and 18 More on Noble gases: xenon fluorides, oxides and oxyfluorides

Previous questionNext question

More questions on Noble gases: xenon fluorides, oxides and oxyfluorides