The noble gases have closed-shell electronic cordigaration and are monatomic gases under normal condition .The low bolling points of the ligher noble gases aree due to the weak dispersion points of the ligher noble gases an due to the weak dispersion forces between the atoms and the alsence of other interalumic interactions.
The direct reaction of xenon with flarine loads to a series of compounds with water oxidation number `+2, - 4 and +6, XeF_(4)` reactsviolenatly with water to give `XeO_(2)` .The compound of deduced axbibt nci strouchemistry and their goometries can be deduced considering the total number of electron puirs in the valence shell.
Argon is used in arc welding because of its

Options

A. low reactivity with metal
B. ability to lower the melting point of metal
C. flammability
D. high calorific value

Answer

A