Advertisements
Advertisements
Question
Which noble gas is used in filling balloons for meteorological observations?
Solution
Helium, being light, non-inflammable and unreactive, is used for filling of balloons for metrological observations.
APPEARS IN
RELATED QUESTIONS
Which noble gas has the lowest boiling point?
Complete the equation : XeF2+PF5 →
Balance the following equation: XeF6 + H2O → XeO2F2 + HF
Answer the following.
List the uses of Neon and argon gases.
Complete the given chemical equations:
`2XeF_2 + 2H_2O->`
Complete the following reactions:
XeF6+2H2O ----->
Fill in the blanks by choosing the appropriate word/words from the brackets
(square pyramidal, electrical, 74; 26, sp3d2, sp3d, chemical, 68, 32, tetrahedral, yellow, white, iodoform, Lucas)
The geometry of XeOF4 molecule is ______ and the hybridisation of Xenon atom in the molecule is ________.
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 order of increasing sizes of atomic radii among the elements O, S, Se and As is:
\[\ce{XeF4 + H2O - \underline{}\underline{}\underline{}\underline{} + \underline{}\underline{}\underline{}\underline{}}\]
