- Atomic Radius (Å)
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.
10
Atomic Number
20.18
Atomic Mass (u)
24.7
Melting Point (K)
27.07
Boiling Point (K)
0.9
Density (solid: g/cm³, gas: g/liter)
0.51
Atomic Radius (Å)
0.58
Covalent Radius (Å)
21.56
First Ionization Energy (eV)
-116
Electron Affinity
2
Number of Shells
8
Electron Valency
2, 8
Electron Shell Occupations
1.03
Specific Heat (J/g)