โ† Periodic Table
B
Element #5

Boron

metalloid solid Discovered 1808
10.811 Atomic Mass (u)
2076 C Melting Point
3927 C Boiling Point
2.34 g/cm3 Density
2.04 Electronegativity
[He] 2s2 2p1 Electron Config
2 Period
13 Group

๐Ÿ“– About Boron

A metalloid with one of the highest melting points of any element. Boron compounds have been used since ancient times (borax). It is a critical neutron absorber in nuclear reactor control rods and emergency shutdown systems. Pure crystalline boron is one of the hardest materials known.

๐Ÿ”ง Uses and Applications

  • Nuclear reactor control rods (neutron absorption)
  • Borosilicate glass (Pyrex)
  • Detergents and bleach (borax)
  • Semiconductors
  • High-strength boron fibers for aerospace

๐Ÿ’ก Did You Know?

Fact: Boron-10 absorbs neutrons so effectively that it is used in emergency reactor shutdown systems. Injecting boric acid solution is a last-resort way to stop a runaway nuclear chain reaction.