Atomic Number 18 - Argon

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HOME > Protocols > Reference Material > Periodic Table > Argon

Argon

Atomic Number: 18

Name: Argon

Atomic symbol: Ar

Atomic Weight: 39.948

Electron configuration: 1s²2s²2p⁶3s²3p⁶

Melting Point: -189^oC

Boiling Point: -186^oC

Ionic radius: 1.54 angstroms (+1)

Previous: Atomic Number 17 - Chlorine

Next: Atomic Number 19 - Potassium

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