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QJEEAdv19Ch7a94: JEE Advanced 2019 Chemistry - Class 12 JEEAdv19Ch7a94 Solution: At 143 K, the reaction of XeF 4 with O 2 F 2 produces a xenon…

At 143 K, the reaction of XeF4 with O2F2 produces a xenon compound Y. The total number of lone pair(s) of electrons present on the whole molecule of Y is .................

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XeF4 reacts with O2F2 to form XeF6.O2F2 is fluoronating reagent.

XeF4+O2F2⟶143KXeF6(Y)+O2

The structure of XeF6 is

JEE Advanced 2019 Paper 1 Offline Chemistry - p-Block Elements Question 45 English Explanation

Y compound (XeF6) has 3 lone pair in each fluorine and one lone pair in xenon.

Hence, total number of lone pairs electrons is 19.

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