B

Oxidation States: +3
Atomic Weight: 10.811
Electrons:2-3
Phase: Solid
M.P.: 2349 K
(2076 °C, 3769 °F)
B.P.: 4200 K
(3927 °C, 7101 °F)

Occurrence: 6.9x10-8%
Crystalline boron exists in many polymorphs. Two rhombohedral forms, α-boron and β-boron containing 12 and 106.7 atoms in the rhombohedral unit cell respectively, and 50-atom tetragonal boron are the three most characterised crystalline forms. Boron is electron-deficient, possessing a vacant p-orbital. It is an electrophile. Optical characteristics of this element include the transmittance of infrared light.
At standard temperatures Boron is a poor electrical conductor but is a good conductor at high temperatures. Boron nitride can be used to make materials that are almost as hard as diamond. The nitride also acts as an electrical insulator but conducts heat similarly to a metal. I like to think of this element as Sir Boron the Electrophile. I am very fond of Sir Boron.

Thanks: Wikipedia
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