Neon

Neon is atom number 10 — every Neon atom has exactly 10 protons in its center, and that number is what makes it Neon and nothing else. Its symbol is Ne. At room temperature it is a gas.

Neon is a chemical element with symbol Ne and atomic number 10. It is in group 18 (noble gases) of the periodic table. Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the density of air.

Summary from the source dataset, derived from Wikipedia (CC BY-SA 3.0) · original article

Neon sits in period 2, group 18 of the p-block. Its 10 electrons fill shells of 2, 8 — written as [He] 2s2 2p6. Its electronegativity is — on the Pauling scale, and pulling the first electron off takes 2080.7 kJ/mol. The outermost shell holds 8 electrons — the ones that do all the chemistry.

Full configuration: 1s2 2s2 2p6
Ionization energies (kJ/mol): 2080.7, 3952.3, 6122, 9371, 12177, 15238, 19999, 23069.5 … (10 published)
Electron affinity: -116 kJ/mol · Electronegativity (Pauling): —
Density: 0.9002 g/L · melts 24.56 K · boils 27.104 K

Values exactly as published — see where the data comes from.