10 - Neon noble gas
Discovered by Morris Travers in 1898
- 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.
| Shell | Electrons | Orbitals |
|---|---|---|
| 1 | 2 | 2 in 1s |
| 2 | 8 | 2 in 2s + 6 in 2p |
20.18 u
Atomic Mass
0.51 Å
Atomic Radius
27.07 K
Boiling Point
0.58 Å
Covalent Radius
9.00e-4 g/cm³
Density
-1.16e+2
Electron Affinity
21.56 eV
First Ionization Energy
24.7 K
Melting Point
2
Number of Shells
8
Electron Valency
10
Atomic Number
2, 8
Electron Shell Occupations
