Atomic number: 5

Symbol: B

Category: metalloid

Density at 25°C: solid, varies from 2.35 to2.52

5th in line of the elements, boron is quite a rare element and only exists on Earth naturally as combined in the minerals like borate. It's a metalloid because it really struggles with having all the properties of metal, it doesn't conduct very well for example but it's still kind of shiny.


Boron comes in various forms like carbon does. image: wikipedia

Use, natural applications or common combinations: 

  • in some microchips
  • bleaches, keeps away bugs

Basic characteristics:

  • Standard atomic weight: [10.806, 10.821]
  • Melting point: 2076 °C
  • Boiling point: 3927 °C
  • Radioactivity: none