Question

Fill in the blanks by choosing the appropriate option. The noble gases can form compounds with $$\underline {\left( {\text{i}} \right)} $$  and $$\underline {\left( {{\text{ii}}} \right)} .$$  The mixture of $$\underline {\left( {{\text{iii}}} \right)} $$  and $$\underline {\left( {{\text{iv}}} \right)} $$  is used for respiration by divers.

	(i)	(ii)	(iii)	(iv)
(a)	iodine	oxygen	oxygen	argon
(b)	fluorine	oxygen	helium	oxygen
(c)	xenon	platinum	argon	krypton
(d)	helium	oxygen	xenon	argon