Noble Gases

What are the noble gases

any of the seven chemical elements that make up Group 18 (VIIIa) of the periodic table. The elements are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn), and element 118 (temporarily named ununoctium [Uuo]).

krypton

Krypton is used in some types of photographic flashes used in high speed photography. Krypton has the atomic number of 36
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xexon

Xexon is used in photographic lamps and intensive arc lamps. Xexon can be found in police car lights.
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radon

radon is sometimes used by hospitals to treat cancer and other diseases. Radon has an atmoic number of 86. It is a rare radioactive element
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