Argon

Chemical Name:   Argon
Chemical Symbol: Ar
Atomic Number:   18
Atomic Mass:        39.95
Melting Point:   - 189.2  oC
Boiling Point:    - 185.7  oC

Argon is include of noble gas that can't react with other substance. Argon often used in gas welding to isolate the welding electrode in order not react with air.

Argon
Argon Basic Chemical

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