10Ne20.180
Neon (Ne)
Element 10 Ā· Noble gas
Neon (Ne) is a chemical element with atomic number 10. It is classified as a noble gas in period 2, group 18 of the periodic table (the p-block). Its standard atomic weight is 20.180 u and its ground-state electron configuration is [He] 2sĀ² 2pā¶.
Neon facts
| Atomic number (Z) | 10 |
|---|---|
| Symbol | Ne |
| Standard atomic weight | 20.180 u |
| Category | Noble gas |
| Group | 18 |
| Period | 2 |
| Block | p-block |
| Electron configuration | [He] 2sĀ² 2pā¶ |
| Electronegativity (Pauling) | ā |
| State at 20 Ā°C | Gas |
| Protons / electrons | 10 / 10 |
| Neutrons (most common isotope, approx.) | 10 |
| Molar mass | 20.18 g/mol |