Information

Rubidium was discovered in 1859 by Robert Bunsen, he is the one who invented the bunsen burner. The name comes from the latin word rubidius which means red. You harvest it from lithium production. Rubidium is in family IVA which is the carbon family, it is the most reactive family in the periodic table. Rubidium bonds with pretty much anything. Rubidium is the color silver and is very lustrous. The symbol on the periodic table is Rb. Rubidium's atomic number is 37 and the mass is 85.4678. It is on the left side of the red line so that means it is a metal. In Rubidium there are 37 electrons and electrons, there are 48 neutrons. ​

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Videos, Periodic. "Rubidium, Water and Indicator (slow Motion) - Periodic Table of Videos." YouTube. YouTube, n.d. Web. 29 Oct. 2015. <https://www.youtube.com/watch?v=iP6CRZdDu6o>.Bentor, Yinon. Chemical Element.com - Rubidium. Oct. 29, 2015 <http://www.chemicalelements.com/elements/rb.html>.
Rubidium Element Square. Digital image. Wikimedia Commons. A Wikimedia Project, 9 Jan. 2010. Web. 22 Jan. 2015.

Rubidium

Rubidium has to natural isotopes one is stable and the other is radioactive. It is a very soft metal like gold and has a silvery white color. When Rubidium is exposed to air for the first time it immediately combusts.
Duncan, Richard D. "Robot Check." Robot Check. Richard D. Duncan, n.d. Web. 29 Oct. 2015. <http://www.amazon.com/Elements-Faith-Vol-Hydrogen-Tin/dp/0890515476>.

How it was discovered

​Rubidium was found using a telescope on two unknown metals and one of them was rubidium. He used a bunsen burner to burn it and found that it has to properties of sodium and potassium. This is how Rubidium was discovered.
Jackson, Tom. The Elements An Illustrated History of the Periodic Table. N.p.: n.p., n.d. Print.