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प्रश्न
Which noble gas has the lowest boiling point?
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उत्तर
Helium has the lowest boiling point.
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संबंधित प्रश्न
Which noble gas is used in filling balloons for meteorological observations?
Complete the following equation:
\[\ce{XeF2 + H2O ->}\]
Give the formula and describe the structure of a noble gas species which is isostructural with:
\[\ce{IBr^-_2}\]
Draw the structures of the following
XeF6
The number of lone pairs of electrons present in ClF5:
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 |
The atomic radii of Zr and Hf are almost identical. This is because of
The order of increasing sizes of atomic radii among the elements O, S, Se and As is:
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:
