Chemistry with Mr. Olson

Argon

My Nucleus

My Electrons

Physical properties

Phase

gas

Density

(0 °C, 101.325 kPa)
1.784 g/L

Melting point

83.80K
(-189.35°C, -308.83°F)

Boiling point

87.30 K
(-185.85 °C, -302.53 °F)

Critical point

150.87 K, 4.898 MPa

Heat of fusion

1.18 kJ·mol−1

Heat of vaporization

6.43 kJ·mol−1

Heat capacity

(25 °C) 20.786 J·mol−1·K−1

Vapor pressure

P/Pa	1	10	100	1 k	10 k	100 k
at T/K		47	53	61	71	87

My Home
(Body, Planet, Universe)

I am Element!

My Compounds (My Friends!)

My Story
Discovered by: Sir William Ramsay Sir Williams Ramsay

and Lord Rayleigh

Discovered at: Scotland
Discovered when: 1894
Argon was discovered by Lord Rayleigh and Sir William Ramsay in 1894. It was isolated by examination of the residue obtained by removing nitrogen, oxygen, carbon dioxide, and water from clean air. In fact, air contains less than 1% argon. The atmosphere of Mars contains less than 2% Ar. It was recognized by the characteristic lines in the red end of the spectrum.
I was the 1st noble gas in the noble gas family.

My Jobs

isotopes of myself are...

argon	Latest page update: made by argon , Oct 20 2006, 12:10 AM EDT (about this update About This Update Edited by argon view changes - complete history)
	Keyword tags: argon chemistry element periodic table of elements More Info: links to this page