Boron is a metal in group IIIA of the periodic table with atomic number 5, an atomic weight of 10.81, and a density of 2.34 Mg/m 3. Its melting point is 2300 C.

Due to the 2s22p1 valence electron structure of boron atoms, neutral boron compounds (such as BF3) often adopt a planar sp2 hybrid configuration, which is conducive to the formation of a planar ...