What does the list of inert gases contain?
inert gas inert gas or noble gas,any of the elements in Group 18 of the periodic table. In order of increasing atomic number they are: helium, neon, argon, krypton, xenon, and radon. They are colorless, odorless, tasteless gases and were once believed to be entirely inert, i.e., forming no chemical compounds; however, some compounds of these elements have been produced, i.e., fluorides of krypton, xenon, and radon. The low chemical activity of the inert gases is due to the fact that their outermost, or valence, electron shell is complete, containing two electrons in the case of helium and eight in the remaining cases. The inert gases are sometimes called the rare gases, although argon is not rare (it makes up about 1% of the atmosphere) and helium is commercially extracted from natural gas and the atmosphere.
There are five inert gases. They are, in order of atomic size: Helium, Neon, Argon, Krypton and Xenon. When Krypton is mentioned, many people are reminded of Superman. Jerry Segal and Joe Schuster, who began writing the Superman comics in 1937, simply took the name “Krypton” from the Periodic Table. The following chart will outline some statistics regarding these inert gases: Name Symbol Atomic Boiling Max. Avail. Amt. in the Approx Number Point(C) Pressure (PSI) Atmosphere US$/ltr. Helium He 2 -268.9 6,000 5.2 PPM $ .10 Neon Ne 10 -246.07 6,000 18.2 PPM $ 1.00 Argon Ar 18 -185.88 6,000 7600 PPM $ .10 Krypton Kr 36 -156.6 1,350 1.1 PPM $ 3.00 Xenon Xe 54 -108.06 800 0.036 PPM $11.00 PPM is parts per million. Approx US$ is approximate cost per liter in US dollars in 1995. In nature, inert gases are found primarily in the atmosphere. We are breathing them right now. The most prevalent of them is the inert gas Argon. Argon’s high amount in the air runs to about .76%, or 7600 parts per mil
inert gas inert gas or noble gas,any of the elements in Group 18 of the periodic table. In order of increasing atomic number they are: helium, neon, argon, krypton, xenon, and radon. They are colorless, odorless, tasteless gases and were once believed to be entirely inert, i.e., forming no chemical compounds; however, some compounds of these elements have been produced, i.e., fluorides of krypton, xenon, and radon. The low chemical activity of the inert gases is due to the fact that their outermost, or valence, electron shell is complete, containing two electrons in the case of helium and eight in the remaining cases. The inert gases are sometimes called the rare gases, although argon is not rare (it makes up about 1% of the atmosphere) and helium is commercially extracted from natural gas and the atmosphere. Sources: http://www.infoplease.com/ce6/sci/A0825174.
There are five inert gases. They are, in order of atomic size: Helium, Neon, Argon, Krypton and Xenon. When Krypton is mentioned, many people are reminded of Superman. Jerry Segal and Joe Schuster, who began writing the Superman comics in 1937, simply took the name “Krypton” from the Periodic Table. The following chart will outline some statistics regarding these inert gases: Name Symbol Atomic Boiling Max. Avail. Amt. in the Approx Number Point(C) Pressure (PSI) Atmosphere US$/ltr. Helium He 2 -268.9 6,000 5.2 PPM $ .10 Neon Ne 10 -246.07 6,000 18.2 PPM $ 1.00 Argon Ar 18 -185.88 6,000 7600 PPM $ .10 Krypton Kr 36 -156.6 1,350 1.1 PPM $ 3.00 Xenon Xe 54 -108.06 800 0.036 PPM $11.00 PPM is parts per million. Approx US$ is approximate cost per liter in US dollars in 1995. In nature, inert gases are found primarily in the atmosphere. We are breathing them right now. The most prevalent of them is the inert gas Argon. Argon’s high amount in the air runs to about .76%, or 7600 parts per mil
