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प्रश्न
Which one of the following does not exist?
पर्याय
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+.
संबंधित प्रश्न
Draw the structure of the following molecule:
XeF4
Draw the structures of the following molecules: XeF2
Complete the following equations : XeF4 + O2F2→
Complete the following equation:
\[\ce{XeF2 + H2O ->}\]
test q 1234
Give the formula and describe the structure of a noble gas species which is isostructural with:
\[\ce{ICI^-_4}\]
The number of lone pairs of electrons present in ClF5:
Draw structure and name the shape of bromine trifluoride.
Explain the trend in the following atomic properties of group 16 elements:
Electron gain enthalpy
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 ______.
Match List - I with List - II:
| List - I | List - II | ||
| (Species) | (Number of lone pairs of electrons on the central atom) |
||
| (A) | XeF2 | (i) | 0 |
| (B) | XeO2F2 | (ii) | 1 |
| (C) | XeO3F2 | (iii) | 2 |
| (D) | XeF4 | (iv) | 3 |
Choose the most appropriate answer from the options given below:
\[\ce{XeF6 + H2O ->[Partial][Hydrolysis] \underline{}\underline{}\underline{}\underline{} + \underline{}\underline{}\underline{}\underline{}}\]
\[\ce{XeF4 + H2O - \underline{}\underline{}\underline{}\underline{} + \underline{}\underline{}\underline{}\underline{}}\]
The element expected to form the largest ion to achieve the nearest noble gas configuration is:
