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.
Unformatted text preview: Zinc is in period 4 in the d-block. The highest occupied principal energy level is n=4. Boron is in period 2 in the p-block. The highest occupied principal energy level is n=2. GUIDE Exercise #20 7. Why are the gases in Group 18 called the noble gases? (How is this related to the occupation of the energy sublevels?) 8. Why do Group 1 metals lose only one electron when they are oxidized? Why do Group 2 metals lose two electrons? How is this related to the energy sublevels and orbitals? 9.