http://periodictable.com/Elements/054/

 

www.education.jlab.org/itselemental/ele054.html

 

www.livescience.com/37504-facts-about-xenon.html

 

www.chemical.com/elements/054

 

http://www.lenntech.com/periodic/elements/xe.htm

 

http://education.jlab.org/itselemental/ele088.html