# Thorium

## Arrupe Jesuit High School, Denver, Colorado, U.S.A.

Thorium: In my illustration of thorium I drew several things. These include the name and symbol of the element in graffiti-art style. The color of the graffiti piece is important as well because it refers to the color of thorium which is a grayish color. I also drew a glow in the background to represent thorium as it is heated up. I also tried to capture thorium’s radioactivity in the tile along with its toxicity.

Artwork by Walter Macias, Teacher: Stephan Graham, Arrupe Jesuit High School, Denver, Colorado, U.S.A.

### Atomic properties*

Name:

Symbol:

Atomic number:

Atomic mass:

Melting point:

Boiling point:

Density:

Electronegativity:

Number of isotopes:

State:

Colour:

Classification:

Thorium

Th

90

232.04 amu

1750°C

4788°C

11.7 g/cm³

1.3

3

Solid

Silvery-white**

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/