Addition of pentavalent impurity to a semiconductor creates many ……..

When a pentavalent impurity is added to a pure semiconductor, it becomes ………

The strength of a semiconductor crystal comes from ……..

When a pure semiconductor is heated, its resistance …………..

The resistivity of a pure silicon is about ……………

A semiconductor has generally ……………… valence electrons.

The most commonly used semiconductor is ………..

A semiconductor has ………… temperature coefficient of resistance.

A semiconductor is formed by ……… bonds.

A pentavalent impurity has ………. Valence electrons