Galium

History- Gallium is a chemical element with symbol Ga and atomic number 31. -Gallium was discovered in 1875 by Paul-Émile Lecoq de Boisbaudran.-It was dicovered in Paris, France.

GalliumBy: Sydney CavinessBlock: 6Date: 5-13-15

Fun Facts!-Mendeléev predicted and described this element, and called it ekaaluminum.-First proposed to exist by Dmitri Mendeleyev in 1871 based on gaps in his newly created Periodic Table-You can buy a gram of gallium for only three dollars

Basic Info-Atomic Number: 31-Atomic Mass: 69.723-Melting Point: 29.76°C or 85.57°F-Boiling Point: 2204°C or 3999°F-Element Classification: Metal-Period Number: 4 -Group Number: 13 -Protons: 31-Neutrons: 39-Electrons: 31

How It's Used:-Large amounts of gallium have been gathered to build an observatory located in Italy built to study particles called neutrinos -It has found use in high temperature thermometers.-Has been used to create low melting alloys. -Gallium is used as a doping material for semiconductors-Has been used to produce solid-state items like transistors and light emitting diodes-Can produce laser light directly from electricity.

Physical/Chemical Properties: -Pure gallium has a silvery color.-Gallium is solid at normal room temperatures.-Becomes liquid when heated slightly.-Solid gallium is soft enough to be cut with a knife.-It is stable in air and water; but it reacts with and dissolves in acids.

Fun Facts! (cont)-Gallium has one of the longest liquid ranges of any metal-The origin of the name comes from the Latin word ‘Gallia’, meaning France.-Gallium can form a very lustrous mirror when painted on glass.

Physical/Chemical Properties: -Pure gallium has a silvery color.-Gallium is solid at normal room temperatures.-Becomes liquid when heated slightly.-Solid gallium is soft enough to be cut with a knife.-It is stable in air and water; but it reacts with and dissolves in acids.

http://www.teachertube.com/video/amazing-gallium-333669