10Ne20.180
Neon
Noble Gas
Gas at STP
Period 2Group 18Block PDiscovered 1898
[He]2s2 2p6
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.
📖 Read more on Wikipedia →Emission Spectrum
Atomic Properties
| Atomic Number | 10 |
| Atomic Mass | 20.180 u |
| Electron Configuration | [He]2s2 2p6 |
| Oxidation States | 0 |
| Atomic Radius | 154 pm |
| Ionization Energy | 21.565 eV |
| Block | P |
Physical Properties
| Appearance | colorless gas exhibiting an orange-red glow when placed in a high voltage electric field |
| Standard State | Gas |
| Melting Point | 24.56 K (-248.6 °C) |
| Boiling Point | 27.07 K (-246.1 °C) |
| Density | 0.0008999 g/L |
| CPK Color | #B3E3F5 |
Classification
| Category | Noble Gas |
| Group Block | Noble gas |
| Period | 2 |
| Group | 18 |
| Block | P |
Discovery
| Year Discovered | 1898 |
| Discovered By | Morris Travers |
| Electron Shells | 2, 8 |