JEE Advanced Chemistry question

Chemistry The p-Block Elements JEE Advanced

Consider the following transformations I. XeF6 + NaF → Na+[XeF7]− II. 2PCl5(s) → [PCl4]+[PCl6]− III. [Al(H2O)6]3+ + H2O → [Al(H2O)5OH]2+ + H3O+ Possible transformations are

(A)I, II, IIICorrect
(B)I, III
(C)I, II
(D)II, III

Answer: (A)

Solution

Each transformation is a genuine, well-documented reaction: XeF6, a fluoride acceptor, readily combines with NaF to give the complex anion [XeF7]⁻ (I); solid PCl5, rather than existing as simple molecular PCl5, is actually an ionic lattice of tetrahedral [PCl4]⁺

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Question ID VK-159394