Xenon [Xe] (CAS-ID: 7440-63-3) locate me
An: 54 N: 77 Am: 131.293 (6)
Group No: 18 Group Name: Noble gas
Block: p-block Period: 5
State: gas at 298 K
Colour: colourless Classification: Non-metallic
Boiling Point: 165.03K (-108.12'C)
Melting Point: 161.4K (-111.7'C)
Density: 5.894g/l
Availability: Xenon is a "noble" or "inert" gas present in the atmosphere to a small extent (1 part in 20 million).
Shell Structure diagrams | Atomic Radius diagram
Isotopes

Discovery Information
Who: Sir William Ramsey , M.W. Travers
When: 1898
Where: Great Britain
Name Origin
Greek: xenon (stranger).
Sources
Obtained from the small quantities in liquid air.
Uses
Used in electronic flashes, projection lamps, UV lamps, and other powerful lamps. Also used in bubble chambers and paint testers.
Notes
Recently at the University of Helsinki in Finland some scientists have made HXeOH and HXeCCH (xenon hydride-hydroxide and hydroxenoacetylene), they are stable up to 40K.
Xenon is non-toxic, but many of its compounds are toxic due to their strong oxidative properties.
Because xenon is heavier than air, the speed of sound in xenon is slower than that in air, and when inhaled, lowers the resonant frequencies of the vocal tract. This produces a characteristic lowered voice pitch, analogous to the high-pitched voice caused by inhalation of helium. The inhalation of xenon is more dangerous than that inhalation of helium. Inhalation can cause mild-to-moderate, short-lasting effects, including a pounding sensation associated with light and sound.
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