Magnesium

Mg12

Basic information

  • Symbol: Mg
  • Atomic number: 12
  • Atomic weight: 24.3050
  • Group: 2
  • Period: 3
  • Color: Silvery white
  • Classification: Metallic

History

  • Magnesium is the 8th most abundant element in earth's crust even though not found in it's elemental form.
  • Normally magnesium is coated with a layer of oxide, MgO, that protects magnesium from air and water.
  • Sea water also contains plenty of magnesium.
  • Magnesium: heating in air and burns with a dazzling white flame.

Uses

It is important for plant and animal life.

Description

Magnesium is a grayish-white, fairly tough metal.

Biology (in humans)

The adult human daily requirement of Magnesium is about 0.3 g day-1

Geology (in the universe)

Chlorophylls porphyrins based upon Magnesium

Properties

12 electrons, shell structure is 2.8.2

Interesting Facts

Magnesium was discovered by Sir Humphrey Davy in 1755 in England.

Url

picture 1:http://cdn.phys.org/newman/gfx/news/hires/2013/fuelefficien.jpg

picture 2:http://www.recyclingmagazin.de/!Dateien/NewsBilder/200807-magnesium[1].jpg

picture 3:https://upload.wikimedia.org/wikipedia/commons/8/8f/Sir_Humphry_Davy,_Bt_by_Thomas_Phillips.jpg