Advertisements
Advertisements
प्रश्न
Give the uses of helium.
थोडक्यात उत्तर
उत्तर
- Helium and oxygen mixture is used by divers in place of air oxygen mixture. This prevents the painful dangerous condition called bends.
- Helium is used to provide an inert atmosphere in the electric arc welding of metals
- Helium has the lowest boiling point hence used in cryogenics (low-temperature science).
- It is much less denser than air and hence used for filling air balloons.
shaalaa.com
Group 17 (Halogen Group) Elements
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
APPEARS IN
संबंधित प्रश्न
Assertion: bond dissociation energy of fluorine is greater than chlorine gas
Reason: chlorine has more electronic repulsion than fluorine
Which one of the following compounds is not formed?
Which of the following is the strongest acid among all?
Which one of the following orders is correct for the bond dissociation enthalpy of halogen molecules?
Among the following the correct order of acidity is
Give the oxidation state of halogen in the following.
I2O4
What is the hybridisation of iodine in IF7? Give its structure.
Suggest a reason why HF is a weak acid, whereas binary acids of all other halogens are strong acids.
Deduce the oxidation number of oxygen in hypofluorous acid – HOF.
What type of hybridisation occur in BrF5
