Boron is a chemical element with the symbol B and atomic number 5. In its crystalline form it is a brittle, dark, lustrous metalloid; in its amorphous form it is a brown powder.

When was pure boron discovered?

Boron was first discovered as a new element in 1808. It was discovered simultaneously by English chemist Sir Humphry Davy and French chemists Joseph L. Gay-Lussac and Louis J. Thenard.

Is boron found by itself?

Boron is not present in nature in elemental form. It is found combined in borax, boric acid, kernite, ulexite, colemanite and borates.