To a germanium sample,traces of gallium are a | vedclass

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(B) Germanium $(Ge)$ is a group $14$ element with $4$ valence electrons.Gallium $(Ga)$ is a group $13$ element,which means it has $3$ valence electron

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$A$ $P-$ type semiconductor

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(B) Germanium $(Ge)$ is a group $14$ element with $4$ valence electrons.Gallium $(Ga)$ is a group $13$ element,which means it has $3$ valence electrons.When a trivalent impurity like Gallium is added to a tetravalent semiconductor like Germanium,it creates a vacancy or a 'hole' in the crystal lattice.Since the majority charge carriers in this doped semiconductor are holes (positive charge carriers),the material behaves as a $P-$ type semiconductor.

To a germanium sample,traces of gallium are added as an impurity. The resultant sample would behave like

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