1.what is the advantage of heating gellium semi-conductor with sites or gold instruct of indium and boron?
2.why co-ordination number of 12 is not found in ionic crystals?
3.what kind of symmetry is exhibited by a match box?
2.why co-ordination number of 12 is not found in ionic crystals?
3.what kind of symmetry is exhibited by a match box?