Difference between revisions of "Germanium"
(Added some basic info) |
|||
| Line 2: | Line 2: | ||
Refining of copper, zinc, lead}} | Refining of copper, zinc, lead}} | ||
| + | '''Germanium''' ''(jer-MAY-ni-em)'' is a brittle, silvery-white semi-metal (metalloid).<ref>http://www.rsc.org/periodic-table/element/32/germanium</ref> | ||
| + | ==History== | ||
| + | Germanium was first proposed to exist by Dmitri Mendeleyev in 1871. He had recently created a Periodic Table of Elements, and identified gaps which where unknown elements. Germanium was officially discovered in 1886 by Clemens Winkler, a German chemist. He found it in the mineral [[argyrodite]] (Ag8GeS6). | ||
{{Template:Periodic table}} | {{Template:Periodic table}} | ||
| + | |||
| + | ==Properties== | ||
| + | Melting Point: 1720.85°F (938.25°C or 1211.40 K) | ||
| + | |||
| + | Boiling Point: 5131°F (2833°C or 3106 K) | ||
| + | |||
| + | Density: 5.323 grams per cubic centimeter | ||
| + | |||
| + | State of Matter at Room Temperature: Solid | ||
| + | |||
| + | ==Uses== | ||
| + | Germanium is primarily used as a semiconductor. With [[arsenic]], [[gallium]], [[indium]], [[antimony]] or [[phosphorus]], it is used to make transistors. Another major use for Germanium is lenses. It is used in the manufacture of wide-angle camera lenses and objective [[lenses]] for [[microscopes]]. <ref>http://www.rsc.org/periodic-table/element/32/germanium</ref> It is also used to create alloys and as a phosphor in fluorescent lamps. <ref>http://education.jlab.org/itselemental/ele032.html</ref> Additionally, adding 1% germanium to [[silver]] prevents tarnishing.<ref>http://www.rsc.org/periodic-table/element/32/germanium</ref> | ||
| + | |||
| + | ==References== | ||
| + | <references /> | ||
| + | |||
| + | ==External Resources== | ||
| + | http://www.rsc.org/periodic-table/element/32/germanium | ||
Revision as of 19:03, December 22, 2015
| Germanium | |
|---|---|
| Properties | |
| Atomic symbol | Ge |
| Atomic number | 32 |
| Classification | Metalloid |
| Atomic mass | 72.6 |
| Other Information | |
| Date of discovery | 1886 |
| Name of discoverer | Clemens Winkler |
| Name origin | From the Latin word Germania, meaning Germany |
| Uses | Semiconductors |
| Obtained from | Refining of copper, zinc, lead |
Germanium (jer-MAY-ni-em) is a brittle, silvery-white semi-metal (metalloid).[1]
History
Germanium was first proposed to exist by Dmitri Mendeleyev in 1871. He had recently created a Periodic Table of Elements, and identified gaps which where unknown elements. Germanium was officially discovered in 1886 by Clemens Winkler, a German chemist. He found it in the mineral argyrodite (Ag8GeS6).
Properties
Melting Point: 1720.85°F (938.25°C or 1211.40 K)
Boiling Point: 5131°F (2833°C or 3106 K)
Density: 5.323 grams per cubic centimeter
State of Matter at Room Temperature: Solid
Uses
Germanium is primarily used as a semiconductor. With arsenic, gallium, indium, antimony or phosphorus, it is used to make transistors. Another major use for Germanium is lenses. It is used in the manufacture of wide-angle camera lenses and objective lenses for microscopes. [2] It is also used to create alloys and as a phosphor in fluorescent lamps. [3] Additionally, adding 1% germanium to silver prevents tarnishing.[4]
References
External Resources
http://www.rsc.org/periodic-table/element/32/germanium
| Periodic Table of the Elements | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | |||||||
| *Lanthanides | ||||||||||||||||||||||||
| **Actinides | ||||||||||||||||||||||||