Atoms and Electrons » Exercise - 289. Conduction band is practically empty in case of their resistivity - (a) Insulators (b) Semiconductors (c) Metals (d) None of these
Atoms and Electrons » Exercise - 268. The electrons in the conduction band are known as ........ (a) bound electrons (b) valence electrons (c) free electrons (d) none of the above
Atoms and Electrons » Exercise - 280. The energy gap between valence and conduction bands in insulators is about ........ (a) 15 eV (b) 1.5 eV (c) zero (d) 0.5 eV
Atoms and Electrons » Exercise - 277. In insulators, the energy gap between valence and conduction bands is ........ (a) very large (b) zero (c) very small (d) none of the above