1. "Group Numbers: Periodicity." WebElements
Periodic Table of the Elements. N.p., n.d. Web. 15 Nov. 2013.
2. "10 Periodic Table Facts." About.com Chemistry. N.p., n.d.
Web. 15 Nov. 2013.
3. "Atoms." Atoms. N.p., n.d.
Web. 15 Nov. 2013.
4. "2% Lithium Ionization Buffer." - 500 ML. N.p., n.d. Web. 15 Nov. 2013
5. "Chemistry Resources at BPC: History of the Development of the Periodic Table of Elements.
"Chemistry Resources at BPC: History of the Development of the Periodic Table of Elements. N.p., n.d. Web. 15 Nov. 2013.
6. "Antoine-Laurent Lavoisier." Homepage of the Chemical Heritage Foundation. N.p., n.d.
Web. 15 Nov. 2013.
2. "10 Periodic Table Facts." About.com Chemistry. N.p., n.d.
Web. 15 Nov. 2013.
3. "Atoms." Atoms. N.p., n.d.
Web. 15 Nov. 2013.
4. "2% Lithium Ionization Buffer." - 500 ML. N.p., n.d. Web. 15 Nov. 2013
5. "Chemistry Resources at BPC: History of the Development of the Periodic Table of Elements.
"Chemistry Resources at BPC: History of the Development of the Periodic Table of Elements. N.p., n.d. Web. 15 Nov. 2013.
6. "Antoine-Laurent Lavoisier." Homepage of the Chemical Heritage Foundation. N.p., n.d.
Web. 15 Nov. 2013.