Neon is an inert gas, with three stable isotopes, Ne20, Ne21, and Ne22.
In my (rather old) reference, there are unstable isotopes known from Ne17 through Ne19, and from Ne23 through Ne25.
Neon is a well known gas through its use in advertising signs. In physics, it enjoys the position of being the first discovery of isotopes of stable elements.
It is the second-lightest of the inert gases, and may be the least reactive element.
Neon is a useful and cheap cryogenic refrigerant.
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Neon blue - FF Neon green - FF00 Neon pink - FF0066 Neon purple - 6600FF
Neon green, neon red, and neon blue are colors that begin with the letter 'N'.
navy blue neon yellow, neon green, neon pink etc. . .
Knee on lights = neon lights.
* Navajo white * Navy blue * Naples yellow * Neon green * Neon orange * Neon pink * Nile green * Nude beige * The color black is negro in Spanish. * Neon could be in front of any colour.