Answer:
Argon is a noble gas. Noble gases do not bond with others atoms easily because they already have a full outer electron shell :)
At -40 °C (-40 °F), however, it can hold no more than 0.2 percent. When a volume of air at a given temperature holds the maximum amount of water vapour, the air is said to be saturated. Relative humidity is the water-vapour content of the air relative to its content at saturation.
I hope this helps you alot and to my understanding:)