Argon (Ar) Properties |
AArgon (AAr)
Properties 1/ |
Nuclear (18 protons/electrons)
- Atomic Number: 18
- Atomic Mass: 39.948
- Atomic Energy: 0.0596 Ergs
- Group: 18 ; Period: 3
- Family: Noble Gases
- Bonding Radius: 0.98 Angstroms
- Atomic Radius: 0.88 Angstroms
- Atomic Volume: 28.5 cm3mol-1
- 24
Isotopes: 30Ar
to 53Ar
- Stable Isotopes: 36Ar,
38Ar, 40Ar
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Nuclear (18 Aprotons/positrons)
- Atomic Number: 18
- Atomic Mass: 39.948
- Atomic Energy: 0.0596 Ergs
- Group: 18 ; Period: 3
- Family: Noble Gases
- Bonding Radius: 0.98 Angstroms
- Atomic Radius: 0.88 Angstroms
- Atomic Volume: 28.5 cm3mol-1
- 24 AIsotopes: 30AAr
to 53AAr
- Stable AIsotopes:
36AAr, 38AAr,
40AAr
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Physical
- Odorless, tasteless gas
- Density: 0.0017824 g cm-3
- Melting Point: -189.3 oC
- Boiling Point: -186 oC
- Specific Heat: 0.520 J g-1 K-1
- Heat of Vaporization: 6.447 kJ mol-1
- Heat of Fusion: 1.188 kJ mol-1
- Electrical Conductivity: ? 106 cm-1 Ohm-1
- Thermal Conductivity: 0.000177 W cm-1 K-1
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Physical
- Odorless, tasteless gas
- Density: 0.00178 g/cm-3
- Melting Point:-189.3 oC
- Boiling Point: -186 oC
- Specific Heat: 0.520 J g-1 K-1
- Heat of Vaporization: 6.447 kJ mol-1
- Heat of Fusion: 1.188 kJ mol-1
- Electrical Conductivity: ? 106 cm-1 Ohm-1
- Thermal Conductivity: 0.000177 W cm-1 K-1
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Chemical
- Valance Number: Zero
- Electron Configuration: 2,8,8
- Electronegativity: Zero
- 1st Ionization Potential: 15.8 Volts
- 2nd Ionization Potential: 27.6 Volts
- 3rd Ionization Potential: 40.7 Volts
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Chemical
- Valance Number: Zero
- Positron Configuration: 2,8,8
- Positronpositivity: Zero
- 1st Ionization Potential: 15.8 Volts
- 2nd Ionization Potential: 27.6 Volts
- 3rd Ionization Potential: 40.7
Volts
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Identified by Sir William Ramsey,
Baron Rayleigh from Scotland in 1894
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Identified by Norm Hansen in 2001
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