(1) In intrinsic semiconductors, the number of free electrons, is greater than the number of holes
(2) An intrinsic semiconductor will behave like an insulator at T = 0 K
(3) The conductivity of an intrinsic semiconductor depends on its temperature, and at room temperature its conductivity is very high
(4) C, Si and Ge all have the same lattice structure and are all intrinsic semiconductor materials.
