Argon | Chemistry

Ankeny High School, Ankeny, Iowa, U.S.A.

Argon: I used Sir William Ramsey and Lord Rayleigh because in 1894 they discovered argon. I decided to keep their old top hats and mustaches so it would be a little more obvious as to who they were. I put them in wet suits because argon is used in the suits since it is non-reactive and good for insulation. I decided to have them perched on top of the Earth because there is 0.94% of argon in the Earth's atmosphere. I also included Mars in the background because 1.6% of its atmosphere contains argon.

Marinda Fuller's artwork was chosen through a contest with all chemistry classes. Medium: acrylic paint. Teacher: Mr. Fickbohm, Ankeny High School, Ankeny, Iowa, U.S.A.

Atomic properties*

Name:

Argon

Symbol:

Ar

Atomic number:

18

Atomic mass:

39.928 amu

Melting point:

-186.36°C

Boiling point:

-185.85 °C

Density:

0.001784 g/cm³

Electronegativity:

3.16

# of Isotopes:

2

State:

Gas

Colour:

Yellowish-green±

Classification:

Non-metallic±

* Haynes, W. M. (2011). CRC Handbook of Chemistry and Physics, 91st edition: http://www.hbcponline.com/ Retrieved April 7, 2011

± Winter, M. (2010). Home of the Periodic Table. Retrieved April 8, 2011, from Web Elements: http://www.webelements.com/