The valence of an impurity added to germanium crystal in order to convert it into a `P`-type semiconductor is

The valency of an impurity element added to germanium or silicon crystal to prepare a p-type semiconductor is

The valance of the impurity atom that is to be added to germanium crystal so as to make it a N -type semiconductor, is

The valency of the impurity atom added to make germanium crystal into n-type semi-conductor have ….

The velence of the impurity atom that is to the be added to garmenium crystal so as to meke it a N -type semiconductor, is

The valency of the impurity atom in p-type semiconductor is

The impurity added in Germanium crystals to make n -type semi-conductor is