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Questions
Write two uses of neon.
List the uses of neon gas.
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Solution
- In neon discharge lamps and signs. These signs are visible from long distances and in mist or fog.
- A mixture of neon and helium is used in certain protective electrical devices, such as voltage stabilizers and current rectifiers.
- Neon is largely used for producing neon lights. Glass tubes filled with neon or a gas combination at low pressure (about 2 mm) light when exposed to an electric discharge. Neon lights are not only attractive to the eye but also effective in penetrating mist and fog. To create different hues of neon lights, adjust the gaseous mixture composition and colour of the tube.
- Neon is also used in television sets, spark plug testers, warning signals, etc.
Notes
Students should refer to the answer according to their questions.
RELATED QUESTIONS
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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)
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XeF4
Draw the structure of XeF4.
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The number of lone pairs of electrons present in ClF5:
Draw structure and name the shape of bromine trifluoride.
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Helium is preferred to be used in balloons instead of hydrogen because it is ____________.
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 |
Substance having the lowest boiling point ______.
The order of increasing sizes of atomic radii among the elements O, S, Se and As is:
Noble gases are named because of their inertness towards reactivity. Identify an incorrect statement about them.
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:
Which one of the following reactions of xenon compounds is not feasible?
Discuss the trends in electronegativity and atomic radii for elements of group 16 17, 18.
