P-Block Elements Ques 427

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

[MP PET 1994]

Options:

A) $ XeF_2 $

B) $ XeF_4 $

C) $ XeO_3 $

D) $ XeF_6 $

Show Answer

Answer:

Correct Answer: C

Solution:

$ XeF_2,XeF_4\And XeF_6 $ can be directly prepared

$ Xe+F_2\underset{673K}{\mathop{\xrightarrow{Nitube}}}XeF_2 $ ;

$ Xe+2F_2\underset{6\text{ atm}}{\mathop{\xrightarrow{673K}}}XeF_4 $

$ Xe+3F_2\underset{50-60atm}{\mathop{\xrightarrow{523-573K}}}XeF_6 $

$ XeO_3 $ is obtained by the hydrolysis of $ XeF_6 $ $ XeF_6+3H_2O\to XeO_3+6HF $



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