xenon

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A labeled diagram of the periodic table entry for xenon shows its atomic number 54, symbol Xe, atomic weight 131.293, electron configuration, and name. It is identified as a noble gas, with a face-centered cubic crystal structure, weakly acidic higher-valence oxides, and is a gas at 20 degrees Celsius.

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Line graph showing the first ionization energies of the elements as a function of atomic number, with peaks at noble gases like helium, neon, argon, krypton, xenon, and radon, and labeled elements at key points.

At a Glance

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xenon: Media

chemical element

Images

A labeled diagram of the periodic table entry for xenon shows its atomic number 54, symbol Xe, atomic weight 131.293, electron configuration, and name. It is identified as a noble gas, with a face-centered cubic crystal structure, weakly acidic higher-valence oxides, and is a gas at 20 degrees Celsius.

xenon

Encyclopædia Britannica, Inc.

Flash lamp

Flash lamp

A xenon flash lamp being fired. When a charge of electricity ionizes the xenon gas...

Gregory Maxwell

Line graph showing the first ionization energies of the elements as a function of atomic number, with peaks at noble gases like helium, neon, argon, krypton, xenon, and radon, and labeled elements at key points.

first ionization energies of the elements

First ionization energies of the elements.

Encyclopædia Britannica, Inc.

Interactives

Explore an interactive periodic table of the elements

Explore an interactive periodic table of the elements

Periodic table of the elements.

Encyclopædia Britannica, Inc.

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