|Atomic mass||24.305 amu|
|Number of Stable Isotopes||3|
|Date of discovery||1808|
|Name of discoverer||Sir Humphrey Davy|
|Name origin||Magnesia (city in Thessaly, Greece)|
|Obtained from||Dolomite, magnesite, carnallite, kieserite, sea water|
It is somewhat soft, and very light. When finely divided, it burns with a brilliant white light. It is used in fireworks, was formerly used in photographic flash bulbs, and was used in flash powder before that. It is also used in very light alloys in aircraft and missiles, in lens coatings, and as an electrolytic (galvanic) protector of other metals.
Magnesium was identified as an element in 1755 by Joseph Black, and isolated in 1808 by Sir Humphrey Davy, by electrolysis.
|Periodic Table of the Elements|