Stouffville District Secondary School, Stouffville, Ontario, Canada
Ruthenium: Red, white, blue are colours of Ruthenia, (was originally blue and yellow until it was changed by Czech parliament). The Bohr model f atom and nesting dolls represent culture of Ruthenia. The jewellery and ball point pens represent uses of ruthenium; red also represents colours of ruthenium compounds, e.g. ruthenium chloride.
Andy Cherkas, Stouffville District Secondary School, Stouffville, Ontario, Canada
Number of isotopes:
* 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/