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Tadeusz Reytan Secondary School, Warsaw, Poland

Cerium, 58, Tadeusz Reytan Secondary School, Warsaw, PolandCerium: Our drawing shows planetoid Ceres, whose name comes from the name of goddess Ceres. Ceres was the Roman goddess of vegetation and harvest. The element was named "cerium", because it was discovered immediately after the discovery of planetoid Ceres. This funny red dinosaur is a ceratosaurus. We have had such associations because in Polish we call the element "cer", not "cerium". It is red because cerium sulphide is used in red non-toxic pigments. The ceratosaurus is holding a lighter — cerium is also used in lighters. On our planetoid there is also a low-energy light bulb because cerium is used to make filaments. Cerium oxide is also used in self-cleaning ovens and flat-screen TVs.

Artwork by K. Dąbrowska, K. Derlatka, U. Gołyska, G. Jaroszewska, M. Jarzynka, T. Łempicki, S. Łopaciuk, A. Rutkowska and L. Bendyk, Tadeusz Reytan Secondary School, Warsaw, Poland

Atomic properties*

Name:

Symbol:

Atomic number:

Atomic mass:

Melting point:

Boiling point:

Density:

Electronegativity:

Number of isotopes:

State:

Colour:

Classification:

Cerium

Ce

58

140.12 amu

799°C

3443°C

6.77 g/cm³

1.12

6

Solid

Iron-grey lustrous-metal

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/