When the compound participates in a reaction, the inert noble gas is released. Actively scan device characteristics for identification. Use precise geolocation data. Select personalised content. Create a personalised content profile. Measure ad performance. Select basic ads. Create a personalised ads profile. Select personalised ads. Apply market research to generate audience insights. Measure content performance. Develop and improve products. List of Partners vendors. Share Flipboard Email.
Anne Marie Helmenstine, Ph. Chemistry Expert. Helmenstine holds a Ph. She has taught science courses at the high school, college, and graduate levels. Facebook Facebook Twitter Twitter. Updated August 19, Cite this Article Format. Helmenstine, Anne Marie, Ph. Cities at night would be rather boring without all the bright lights. They provide colorful Illuminations and help make things much more visible. The reactivity of an element can give us important clues as to the electron configuration of that material.
If an element is extremely unreactive, this suggests that the electron configuration is such that adding or removing electrons is very unlikely. There must be a stable electron configuration that resists further reaction. The Group VIII new group 18 elements are essentially chemically inert light blue column on the right. All these elements exist as monatomic gases at room temperature. If we look at the electron configurations, we see that helium atomic number 2 has a full shell of two s electrons.
Since there are no electrons shielding this shell from the nucleus, these two electrons will be very difficult to remove, making helium unreactive. The remaining elements in the group have full outer shells consisting of two s electrons and six p electrons for an outer shell content of eight electrons. This particular arrangement renders the atoms fairly unreactive. In more recent years, a number of reactions using the noble gas elements have been discovered. Although the conventional wisdom was that the complete outer shells of these elements would not allow them to react, some scientists believed that the outer electrons of the larger elements such as Rn, Xe, and Kr were far enough away from the nucleus that they should be able to be displaced under the right set of conditions.
The first compound XePtF 6 was made with xenon in Since then, several compounds have been made with radon, xenon, krypton, and argon. Only helium and neon have not formed compounds at this time. The different gases glow when an electric current is passed through them.
Many of these gases are used in displays because of their chemical inertness. They are stable and will not react with other materials in the system. Radon also will give a reddish glow, but is not used because it is radioactive and will not retain its structure as radon for any significant length of time.
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