Al2O3 is it covalent or ionic​

Silica, sio2, is formed on silicon as an electrically insulating layer for microelectronic devices. silica is formed when silicon is exposed to o2 gas at an elevated temperature. at 900˚c, it takes 90 minutes for the oxygen to diffuse from the surface to form a 0.06 micron (0.06 x 10-6 m) thick layer of sio2 on

What problem would a person have if the nucleic acid in one of his or her cells were damaged?

What will most likely happen when two bromine atoms bond together?