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Question
Which one of the following does not exist?
Options
XeOF4
NeF2
XeF2
XeF6
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Solution
NeF2
Explanation:
NeF2 does not exist. This is because the sum of first and second ionisation enthalpies of Ne are much higher than those of Xe. Consequently, F2 can oxidise Xe to Xe2+ but cannot oxidise Ne to Ne2+.
RELATED QUESTIONS
Draw the structure of the following molecule:
XeF4
Draw the structures of the following molecules: XeF2
Write the structures of the following molecule:
XeOF4
Complete the following equation:
\[\ce{XeF2 + H2O ->}\]
Balance the following equation:
\[\ce{XeF6 + H2O -> XeO2F2 + HF}\]
How are xenon fluorides XeF2, XeF4 and XeF6 obtained?
How are XeO3 and XeOF4 prepared?
Give the formula and describe the structure of a noble gas species which is isostructural with:
\[\ce{BrO^-_3}\]
Write electronic configuration and two uses of neon. (Z = 10)
Complete the following reactions : XeF6 + 3H2O →
Draw the structures of the following
XeF6
Draw structures of the following:
XeF4
The number of lone pairs of electrons present in ClF5:
Which of the following fluorides does not exist?
In which of the following pairs, the two species are isostructural:
Match the compounds given in Column I with the hybridisation and shape given in Column II and mark the correct option.
| Column I | Column II |
| (A) XeF6 | (1) sp3d3 – distorted octahedral |
| (B) XeO3 | (2) sp3d2 – square planar |
| (C) XeOF4 | (3) sp3 – pyramidal |
| (D) XeF4 | (4) sp3d2 – square pyramidal |
\[\ce{XeF4 + H2O - \underline{}\underline{}\underline{}\underline{} + \underline{}\underline{}\underline{}\underline{}}\]
Discuss the trends in electronegativity and atomic radii for elements of group 16 17, 18.
