Alkali Metals
By Tara Lydon, Hayley Atack, Sophia Pawela, & Isabel Frazier
Position of Alkali Metals on the Periodic Table
The Alkali Metals, found in group 1 of the periodic table are very reactive metals that do not occur freely in nature. Alkali metals can explode if they are exposed to water. Alkali Metals are in group one becuase they only have one valence electron.
Alkali Elements
All Alkali Metals only have one valence electron.
Alkali Metals are on the far left of the periodic table because they only have one valence electron.
Safety Concerns
Safety: When you come in contact with Cesium you could have effects like nausea, vomiting, and or bleeding.
Enviromental: The element Rubidium is highly reactive, with properties similar to those of other Alkali Metals.
Everyday Uses
Sodium is used everyday in table salt.
Potassium is in foods like bananas.
Rubidium is used for "getter" in vacuum tubes.
Lithium is used for treatment of Bipolar disorder.
Cesium is also used in vacuum tubes.
Lithium
Melting Point: 180.54 °C
Boiling Point: 1347.0 °C
Atomic Number: 3
Atomic Mass: 6.941 amu
Symbol: Li
History: Lithium was discovered by Johann Arfvedson, in 1817. It was in Stockholm, Sweden, it was discovered from a mineral source.
Link of were Lithium was discovered- https://maps.google.com/maps?q=Stockholm,+Sweden+on+a+map&safe=active&ie=UTF-8&ei=divYUufXHNPrkAeNgoHwBQ&ved=0CAoQ_AUoAg
Sodium
Melting Point: 97.72 °C
Boiling Point: 883 °C
Atomic Number: 11
Atomic Mass: 22.98977 amu
Symbol: Na
Link of were Sodium was discovered-https://maps.google.com/maps?safe=active&q=england&ie=UTF-8&ei=qi7YUvf_GJe_sQT-qILwCQ&ved=0CAgQ_AUoAg
Potassium
Melting Point: 63.65 °C
Boiling Point: 774.0 °C
atomic Mass: 39.0983
Atomic Number: 19
Symbol: K
Link of were Potassium was discovered-https://maps.google.com/maps?safe=active&q=england&ie=UTF-8&ei=qi7YUvf_GJe_sQT-qILwCQ&ved=0CAgQ_AUoAg
Rubidium
Melting Point- 38.89°C
Boiling Point- 688.0 °C
Atomic Mass- 85.4678
Atomic Number-37
Symbol- Rb
Link of were Rubidium was discovered- https://maps.google.com/maps?safe=active&q=germany&ie=UTF-8&ei=EC_YUq6XF46vsQSp1IGQAQ&ved=0CAgQ_AUoAg
Cesium
Melting Point- 28.5 °C
Boiling Point- 678.4 °C
Atomic Number- 55
Atomic Mass- 132.90543
Symbol- Cs
History: Cesium was discovered by Robert Wilhelm Bunsen and Gustav Robert Kirchhoff in 1860. Cesium was discovered in the country of Germany. It was discovered through the spectroscopic analysis of Durkheim mineral water. They named cesium after the blue lines they observed in its spectrum.
Link of were Lithium was discovered- https://maps.google.com/maps?safe=active&q=germany&ie=UTF-8&ei=EC_YUq6XF46vsQSp1IGQAQ&ved=0CAgQ_AUoAg
Francium
Melting Point-27.0 °C
Boiling Point-677.0 °C
Atomic Number- 87
Atomic Mass- 223.0197
Symbol- Fr
History: Francium was discovered by Marguerite Perey in 1939 at Curie Institute in Paris. It was discovered while analyzing actinium's decay sequence.
Link of were Francium was discovered- https://maps.google.com/maps?safe=active&q=curie+institute+paris+france&ie=UTF-8&ei=Ry_YUvKTFMzksAS3l4LwDw&sqi=2&pjf=1&ved=0CAgQ_AUoAg
Citations
"Dynamic Periodic Table." Dynamic Periodic Table. N.p., n.d. Web. 25 Jan. 2014.
"Periodic Table of Elements." : Cesium. N.p., n.d. Web. 28 Jan. 2014.
"Chemicalelemets.com." Chemicalelemets.com. N.p., n.d. Web. 28 Jan. 2014.
"Rubidium." WebElements Periodic Table of the Elements. N.p., n.d. Web. 28 Jan.
"Lithium." Pictures, Stories, and Facts about the Element in the Periodic Table. N.p., n.d. Web. 28 Jan. 2014.
"Alkali Metals to the Left." Chem4Kids.com: Elements & Periodic Table: Alkali Metals. N.p., n.d. Web. 28 Jan. 2014.
"Alkali Metals - Brainiac [9,378 Views]." TeacherTube. N.p., n.d. Web. 28 Jan. 2014.