Argon is a noble gas from the periodic table. It is an odorless, colorless gas that is the third most abundant gas in the Earth's atmosphere. Argon is used in many industrial processes, including welding, heat treating and the production of light bulbs.
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| Atomic number | 18 |
| Group | VIIIA |
| Period | 3 |
| Mass | 39.948 |
| Latin name | Argon |
| Electron configuration | [Ne]3s2 3p6 |
| Oxidation state | 0 |