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प्रश्न
Which noble gas is used in filling balloons for meteorological observations?
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उत्तर
Helium, being light, non-inflammable and unreactive, is used for filling of balloons for metrological observations.
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संबंधित प्रश्न
Which noble gas has the lowest boiling point?
Write the structures of the following molecule:
XeOF4
Which one of the following does not exist?
Answer the following.
List the uses of Neon and argon gases.
Complete the given chemical equations:
`2XeF_2 + 2H_2O->`
The number of lone pairs of electrons present in ClF5:
Which of the following fluorides does not exist?
Substance having the lowest boiling point ______.
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:
