A binary fluoride (Z) of xenon combines with two moles of NaF to give a product which on hearting to 100°C… · ABC26IN0204
Subject: Inorganic Chemistry · Chapter: Main Group Elements · Topic: Phosphazenes Sn Compounds · Exam: CSIR NET 2018 · Marks: 2 · Difficulty: Medium
A binary fluoride (Z) of xenon combines with two moles of NaF to give a product which on hearting to $100^{\circ}\mathrm{C}$ affords compounds A. the alkaline hydrolysis of A gives perxenate salt. Z and A are, respectively,
(a)$\mathrm{XeF_2}$ and $\mathrm{XeF_4}$
(b)$\mathrm{XeF_4}$ and $\mathrm{XeF_6}$
(c)$\mathrm{XeF_6}$ and $\mathrm{XeF_4}$
(d)$\mathrm{XeF_6}$ and $\mathrm{XeF_6}$
Answer
Answer: D ✓ checked by 4AB · confidence medium
The source book printed no answer; this one was worked out and checked — see the explanation.
Explanation
XeF₆ + 2 NaF → Na₂XeF₈; heating regenerates XeF₆. Alkaline hydrolysis of XeF₆ gives xenate, which disproportionates to perxenate — both blanks are XeF₆.