(From the Greek argos, "inert") A colorless, odorless, tasteless chemical element, the most abundant of the noble gases, constituting nearly 1% of the atmosphere. It is used in incandescent light bulbs, radio tubes, welding, etc.

Symbol: Ar
Atomic number: 18
Atomic weight: 39.948
Density (at 0°C with 101,325 pascals): 1.78 g/L
Melting point: -189°C
Boiling point: -185.9°C
Valence: 0
Ground state electron configuration: [Ne]3s²3p⁶

Argon
Symbol: Ar
Atomic Number: 18
Boiling Point: 87.45 K
Melting Point: 83.95 K
Density at 300K: 1.784 g/cm³
Covalent radius: 0.98
Atomic radius: 0.88
Atomic volume: 24.2 cm³/mol
First ionization potental: 15.759 V
Specific heat capacity: 0.520 Jg^-1K^-1
Thermal conductivity: 0.0177 Wm^-1K^-1
Electrical conductivity: N/A
Heat of fusion: 1.188 kJ/mol
Heat of vaporization: 6.506 kJ/mol
Electronegativity: N/A

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Inhaling Argon gas will have the opposite effect of Helium, instead making your voice much deeper/lower, due to it being heavier than air.

The only time I have seen it was watching Jay Leno, where one of his guests had Fun with Chemistry. Inhaling Argon gave him a deep, baritone voice, like Arnold Schwarzenneger, as he said "I love you, baby! I'll be back."

The Argon gas is denser, so it passed though his vocal cords and created a deeper tone. Since it's heavier than air, it doesn't fade like Helium does. Instead of floating upwards out of the lungs, it pools at the bottm due to gravity. Jay Leno had to bend way over and blow really hard a few times. Since by doing that his mouth was lower than his lungs, eventually the gas floated down out of his mouth. There are gases other than Argon that they could have used, though you'd want them to be inert so they don't harm you.

Ar"gon (&?;), n. [Gr. &?; inactive.] (Chem.)

A substance regarded as an element, contained in the atmosphere and remarkable for its chemical inertness. Rayleigh and Ramsay.

 

© Webster 1913

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Ar"gon (?), n. [NL., fr. Gr. &?;, neut. of &?; inactive; &?; priv. + &?; work.] (Chem.)

A colorless, odorless gas occurring in the air (of which it constitutes 0.93 per cent by volume), in volcanic gases, etc.; -- so named on account of its inertness by Rayleigh and Ramsay, who prepared and examined it in 1894-95. Symbol, A; at. wt., 39.9. Argon is condensible to a colorless liquid boiling at -186.1° C. and to a solid melting at -189.6° C. It has a characteristic spectrum. No compounds of it are known, but there is physical evidence that its molecule is monatomic. Weight of one liter at 0° C. and 760 mm., 1.7828 g.

 

© Webster 1913