Argon
Argon is the chemical element. In the periodic table that has the symbol Ar and atomic number 18. The third noble gas, in group 18, argon makes up about 1% of the Earth's atmosphere, making it the most common noble gas on Earth.
External links
- WebElements.com – Argon
- Diving applications: Why Argon?
- Argon Ar Properties, Uses, Applications
~ Table of Content ~
| ► | Introduction |
| ► | Notable characteristics |
| ► | Applications |
| ► | History |
| ► | Occurrence |
| ► | Compounds |
| ► | Isotopes |
| ► | References |
| ► | External links |
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