Nitrogen
Nitrogen is a colorless, odorless, and tasteless gas. It is inert: it doesn’t react with any other substance under normal temperature and pressure conditions.
Oxygen
Oxygen is a colorless, odorless, and tasteless gas. A highly reactive element, it can form compounds with almost all other elements by oxidizing them.
Argon
Argon is a colorless, odorless, and tasteless gas. It is chemically inert. It is the most abundant of “noble or rare gases”.
Noble gases: Krypton, Neon, Xenon
Krypton, Neon, Xenon are monatomic inert gases. Air only contains 0.002% of these gases.