The correct answer is Xenon.
Xenon is a chemical element with the symbol Xe and atomic number 54. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas at standard temperature and pressure. It occurs in the Earth’s atmosphere in trace amounts. Xenon is the second-most abundant noble gas in the Earth’s atmosphere, at 0.09%. It is more abundant in the atmospheres of Jupiter and Saturn, where it constitutes 0.15% and 0.08% of the atmosphere, respectively.
Xenon is a noble gas, which means that it is very stable and does not react with other elements. It is used in a variety of applications, including lighting, lasers, and medical imaging.
Neon, krypton, and argon are also noble gases, but they are not as abundant in the Earth’s atmosphere as xenon. Neon is used in lighting, krypton is used in lasers, and argon is used in light bulbs and arc welders.
Xenon is called the stranger gas because it is the most chemically reactive of the noble gases. It can form compounds with fluorine, oxygen, and other elements.