neon (Ne), chemical element, inert gas of Group 18 (noble gases) of the periodic table, used in electric signs and fluorescent lamps. Colourless, odourless, tasteless, and lighter than air, neon gas occurs in minute quantities in Earth's atmosphere and trapped within the rocks of Earth's crust.

Is neon a gas element?

Neon is a chemical element with the symbol Ne and atomic number 10. It is a noble gas. Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the density of air.

Why neon is a gas?

Neon atoms have 10 electrons and 10 protons with a full outer shell of 8 electrons. Under standard conditions the element neon is a colorless odorless gas. It is a completely inert gas, meaning that it will not combine with other elements or substances to create a compound.