Neon certainly is an element. Every atom in neon has the same number of protons in its nucleus, namely 10, and every other atom in the universe has either more or fewer protons in its nucleus, which is what it means to be an element. That is what it means to be an element; you have the same particular number of protons in every single atom .
Like Helium, Argon, Krypton, Xenon, and Radon, Neon is what we call a noble gas which means that it need not be able to form compounds at all, and unlike Krypton, Xenon, and Radon, but like Helium and Argon, it does indeed not form any compounds at all.
It can of course form mixtures, such as if you mix it with other gases, including the other noble gases, but neon by itself is of course not mixed, or it would not be neon.
Therefore, yes, neon is an element, not a mixture, and not a compound.
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Neon is an element. It is a noble gas with the atomic number 10 and is found on the Periodic Table as a pure substance.
Except for possible impurities present at low concentrations, the gas in a neon lamp consists of only the element neon.
No, neon gas in a neon sign is not a compound. Neon gas is an element. In neon signs, the neon gas lights up when an electric current passes through it, producing the characteristic bright glow.
Iodine crystals are a pure element, as they consist of only iodine atoms bonded together. They are not a compound or a mixture.
Sucrose is a compound composed of carbon, hydrogen, and oxygen atoms. It is not an element or a mixture.
Neon is a homogeneous mixture. It is a noble gas that is composed of individual atoms that are uniformly distributed throughout the substance, making it a uniform composition.
Nickel is an element, not a compound or mixture. It is a chemical element with the symbol Ni and atomic number 28.