Lithium

Atomic number: 3

Symbol: Li

Category: metal

Density at 25°C: solid, 0.534 g·cm−3 (which is very light for that volume)

Lithium is the 3rd element. It has the honour of being the 1st metal too. So it has the properties of a metal, like being shiny silvery in colour. But it's a pretty unhappy metal by itself as it  wants to bind chemically with other elements aroud. But it's not super reactive because it's electrons are relatively close to the centre of the atom. There are far more reactive elements in this period.  In it's natural form it really tends to be combined with other elements. On Earth Lithium is locked up in minerals.

250px-Lithium_paraffin.jpg

Lithium in oil, it doesn't react because the electrons in the oil are shared through the oil molecules and not easily available. image:wikipedia


Use, natural applications or common combinations: 

  • Lithium ion batteries
  • LiO


Basic characteristics:

  • Standard atomic weight: 6.94(1)
  • Melting point: 180.54 °C
  • Boiling point: 1342 °C
  • Radioactivity: all stable