Check in the pair Spanish-Catalan (apertium-es-ca), the name of the 118 chemical elements that are not present in either Spanish or Catalan, or both. Create a text document with the following information.

- list of the 118 elements in Spanish in alphabetical order. Eg. "actinio aluminio .... yodo zinc"
- list of the 118 elements in Catalan in alphabetical order. Eg. "actini alumini ... zinc zirconi"
 
Then for each missing elements, indicate:
- the name
- the atomic number
- if missing in Spanish
- if missing in Catalan
 
Here are two links that can help yo
http://es.wikipedia.org/wiki/Elemento_qu%C3%ADmico (hint: you can order alphabetically by clicking on "nom" in the table title)
http://ca.wikipedia.org/wiki/Element_qu%C3%ADmic
 

You can use the online interface to test the missing words http://www.apertium.org/index.php?id=translatetext missing words are preceded by an asterix * (do not forget to check that option)