reinstate(verb) restore to the previous state or rank. restore, reinstate, reestablish(verb) bring back into original existence, use, function, or position. restore law and order; reestablish peace in the region; restore the emperor to the throne.
For the quintessence of classical philosophy, see Aether (classical element). Boron is a chemical element with symbol B and atomic number 5. Produced entirely by cosmic ray spallation and supernovae and not by stellar nucleosynthesis, it is a low-abundance element in the Solar system and in the Earth's crust.
Boron is a semimetal which has an atomic weight of 10.8111. Boron has a melting point of 3760 Â°F and a boiling point of 7101 Â°F. In its natural state, boron is hard and brittle and has a shiny black appearance; at high temperatures boron is an excellent conductor of electricity.