JEE Advanced2007Chemistryp Block Elements (Group 15, 16, 17 & 18)Actual
Paragraph: The noble gases have closed-shell electronic configuration and are monoatomic gases under normal conditions. The low boiling points of the lighter noble gases are due to weak dispersion forces between the atoms and the absence of other interatomic interactions. The direct reaction of xenon with fluorine leads to a series of compounds with oxidation numbers +2,+4 and +6 . XeF ₄ reacts violently with water t
Options
- Alow reactivity with metal
- Bability to lower the melting point of metal
- Cflammability
- Dhigh calorific value
Correct answer
A. low reactivity with metal
Step-by-step solution
Argon is used in arc welding to cause the inert atmosphere around without interaction with metal.