Noble gases periodic table
The gases include the elements that appear in the 8th main group of the Periodic Table (also referred to as the 18th group).
What are noble gases?
That is, helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe) and radon (Rn).
Properties of noble gases
The noble gases are characterized by being both colorless and odorless and by being extremely inactive in the chemical sense. The reason for the chemical inactivity is that the outer gels of the noble gases are filled, making them particularly stable. Therefore, the noble gases do not want to capture or emit electrons.
The edible gases occur at standard conditions (0 ° C, 1 bar) just like monoatomic gases. In addition, the noble gases can be characterized as ideal gases, and they obey the ideal gas laws.
pV = nRT
Here p is pressure, V is volume, n is the number of moles, R is the gas constant and T is the temperature. It is imperative that you use the correct units in the equation, as the result otherwise does not make sense.
The vertebrate radon stands out from the others by being radioactive. The most stable isotope of radon is Rn-222 with a half life of 3.8 days. Rn-222 decays ultimately to a stable isotopes of lead Pb-206. Because of this radioactivity, the chemical properties of radon are generally less known.
Finally, the noble gases are also referred to as the rare gases, but this definition is not appropriate. For example, the Earth’s atmosphere contains 0.93% argon in volume and therefore this gas can not be called rare. By comparison, the atmosphere contains only 0.04% CO2.