Based upon paragraph, 3 multiple choice questions have to be answered. Each question has 4 choices (A), (B). (C) and (D), out of which ONLY ONE is correct. Paragraph for Questions: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 to give XeO_(3). The compounds of xenon exhibit rich stereochemistry and their geometries can be deduced considering the total number of electron pairs .: in the valence shell.QArgon is used in arc welding because of its

Based upon paragraph, 3 multiple choice questions have to be answered.

1.	Based upon paragraph, 3 multiple choice questions have to be answered. Each question has 4 choices (A), (B). (C) and (D), out of which ONLY ONE is correct. Paragraph for Questions: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 to give XeO_(3). The compounds of xenon exhibit rich stereochemistry and their geometries can be deduced considering the total number of electron pairs .: in the valence shell.QArgon is used in arc welding because of its
Answer» low reactivity with metal ABILITY to LOWER the melting point of metal ) flammability high calorific value Solution :Argon is USED mainly to provide an INERT ATMOSPHERE in high temperature metallurgical (arc welding of metals/alloys) extraction.