1.

Which of the following is not obtained by direct reaction of constituent elements

Answer»

`XeF_(2)`
`XeF_(4)`
`XeO_(3)`
`XeF_(6)`

SOLUTION :`XeF_(2),XeF_(4) & XeF_(6)` can be directly prepared.
`Xe+ F_(2) OVERSET("Ni TUBE")underset(673 K)to XeF_(2) , Xe + 2F_(2) overset(673 K)underset(6 atm)to XeF_(4)`
`Xe +3 F_(2) underset(50-60 atm) overset( 523-573 K)to XeF_(6)`
`XeO_(3) ` is obtained by the hydrolysis of `XeF_(6)`
`XeF_(6)+ 3H_(2)O to XeO_(3) + 6HF`


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