Less than 0.00001 %.
A very very small amount.
It is approx 1 part in 10 million or 0.00001%
A tiny amount of air.
The air we breathe, indeed does contain Xenon. We recover Xenon by methods of fractional distillation.
They normally get xenon from fractional distillation of air.
xenon is not toxic, it is in the air we breath in.
Xenon is a trace gas. Air is about .08 parts per million of Xenon. (For every million grams of air, there are .08 grams of xenon)
Xenon is more than 4.5 times heavier than air.
Carbon dioxide Argon Water vapours Neon Xenon Krypton Radon Helium
The least prominent gas in the atmosphere is xenon. It represents no more than one percent on the air in the atmosphere.
Air is 20.5 percent oxygen.