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(i) PCl 5is ionic in nature in the solid state. Give reasons. (ii) How are XeO 3 and XeOF 4prepard? (iii) What are interhalogen compounds? Give example

(i) PCl 5is ionic in nature in the solid state. Give reasons. (ii) How are XeO 3 and XeOF 4prepard?
(iii) What are interhalogen compounds? Give example

Grade:Upto college level

1 Answers

Sunil Kumar FP
askIITians Faculty 183 Points
7 years ago
(1)pcl5 as solid state it exists as
PCl4+ PCl6- - the reason that the molecular form is not favored is probably explained by the substantial "gain" in lattice energy moving to an ionic form from a molecular form with weak intermolecular bonds. Also packing of the PCl5 molecules would be less efficient compared to that of the ionic solid with a mix of 4 and 6 coordinate species.



(2)XeO3 prepared by the slow hydrolysis of XeF6
XeF6 + 3H2O ------------> XeO3 + 6HF
XeO4
it is prepared by treating barium perxenate (Ba2XeO6) with anhydrous sulphuric acid.
Ba2XeO6 + 2H2SO4 -----------> XeO4 + 2BaSO4 + 2H2O

(4)interhalogen compund
aninterhalogen compoundis amoleculewhose atom contains two or more differenthalogenatoms (fluorine,chlorine,bromine,iodine, orastatine).
ex-CLF,BrF,ICl,IBr

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