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neon
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A periodic table element box for neon displays its atomic number 10, symbol Ne, atomic weight 20.1797, electron configuration, and labels indicating it is a noble gas, a gas at room temperature, and has a face-centered cubic crystal structure. Crowds of people walk past brightly lit neon signs for bars and music venues on Lower Broadway in Nashville at night. Explore an interactive periodic table of the elements Figure 5: Energy levels of the neon atom. The orbitals occupied by the six outer electrons are indicated on the levels. The transition responsible for the red light from common lasers (wavelength of 6330 Å) is shown by the arrow. 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.
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A periodic table element box for neon displays its atomic number 10, symbol Ne, atomic weight 20.1797, electron configuration, and labels indicating it is a noble gas, a gas at room temperature, and has a face-centered cubic crystal structure.
neon

neon

chemical element
Also known as: Ne
Written and fact-checked by
Britannica Editors
Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree....
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History

neon (Ne), chemical element, inert gas of Group 18 (noble gases) of the periodic table, used in electric signs and fluorescent lamps. Colorless, odorless, tasteless, and lighter than air, neon gas occurs in minute quantities in Earth’s atmosphere and trapped within the rocks of Earth’s crust. Though neon is about 31/2 times as plentiful as helium in the atmosphere, dry air contains only 0.0018 percent neon by volume. This element is more abundant in the...

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