How does the energy gap of an intrinsic semiconductor vary, when doped with a trivalent impurity?

How does the energy gap of an instrinsic semiconductor vary, when doped with a pentavalent impurity?

How does the energy gap in an instrinsic semiconductor vary, when doped with a pentavalent impurity and a trivalent impurity. Draw their energy band diagrams.

How does the forbidden energy gap of an intrinsic semiconductor vary with the increase in temperature

The forbidden energy gap in an intrinsic semiconductor is