Boron notes

Boron is a chemical element with atomic number 5 and the symbol B

Boron's melting point is 2076 degrees celcius
And it's boiling point is 3927 degrees celcius

There are several allotropes of boron:
 Amorphous boron is a brown powder.
 And crystalline boron is silvery to black and extremely hard, about 9.5 on the Mohs scale.
Isotopes:
 Boron has two isotopes, boron-10 and boron-11.
 And boron-10 has five protons and five neutrons.

Uses:
-Boron's primary use is as boron filaments with applications
 similar to carbon fibers in some high strength materials.
-As an additive in fiberglass for insulation and structural materials.
-In polymers and ceramics in high strength, lightweight structural and refractory materials.
-Boron compounds are used as fertilizers in agriculture.
-In sodium perborate bleaches.
-And a small amount of boron is used as a dopant in semiconductors.
-Boron is a component of neodymium magnets
-And for borosilicate glass

Extra:
 Boron or 10B is used in radiation shielding
 And in nuclear reactors, 10B is used for reactivity control and in emergency shutdown systems