Works Cited

http://www.chemicool.com/elements/strontium.html. "Chemicool"; Internet.

http://environmentalchemistry.com/yogi/periodic/Sr.html#Names. "Environmental Chemistry.com"; Internet.

http://ull.chemistry.uakron.edu/periodic_table/index.html. "Periodic Table"; Internet.

http://chemlab.pc.maricopa.edu/periodic/Sr.html. "The Pictorial Periodic Table"; Internet.