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प्रश्न
Which one of the following does not exist?
विकल्प
XeOF4
NeF2
XeF2
XeF6
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उत्तर
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+.
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संबंधित प्रश्न
Account for the following:
Helium is used in diving apparatus.
Which noble gas is used in filling balloons for meteorological observations?
Draw the structure of the following:
XeO3
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Give the formula and describe the structure of a noble gas species which is isostructural with:
\[\ce{IBr^-_2}\]
Give the formula and describe the structure of a noble gas species which is isostructural with:
\[\ce{BrO^-_3}\]
Draw the structures of the following
XeF6
Draw structures of the following:
XeF4
Sulfur dioxide reacts with sodium hydroxide solution to form _______.
Partial hydrolysis of XeF4 gives ____________.
Helium is preferred to be used in balloons instead of hydrogen because it is ____________.
Which of the following reactions is an example of redox reaction?
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 |
Substance having the lowest boiling point ______.
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\[\ce{XeF4 + H2O - \underline{}\underline{}\underline{}\underline{} + \underline{}\underline{}\underline{}\underline{}}\]
Discuss the trends in electronegativity and atomic radii for elements of group 16 17, 18.
