Question

(a) How is XeF₆ prepared from the XeF₄ ? Write the chemical equation for the reaction.
(b) Deduce the structure of XeF₆ using VSEPR theory.
(c) How does XeF₂ reacts with PF₅ ?
(d) Give one use each of helium and neon.
(e) Write the chemical equation for the hydrolysis of XeF₄.

Answer 1

[Hint : (a) XeF₄ + O₂F₂ →  XeF₆ + O₂
(b) Distorted octahedral (6BP + 1LP)

c) XeF₂ + PF₅ → [XeF]+[PF₆]-
(d) He is used in lling balloons/used by scuba divers. Ne is used in discharge tubes, advertisement display purposes.
(e) 6XeF₄ + 12H₂O → 4Xe + 2XeO₃ + 24HF + 3O₂]