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Explain the following: (a) How is XeF_4prepared ? Give its molecular shape. (b)Why ammonia has higher boiling point than phosphene? |
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Answer» Solution :(a) `Xe + 2F_2 UNDERSET(" Ni tube5-6 atm")overset(675K)(to) XeF_4` (1:5 by vol) ` Xe F_2`has square planar geometry DUE `sp^3 d^2`hybridisation is atom of Xe atom. There are two lone pairs of electrons present on Xe atom.  (b)Ammonia has higher boiling POINT than phosphine. This is because in `NH_3`there are intermolecular H-bonds but in phosphine there are weak VAN der Waals. forces of attraction. 
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