When Silicon (Si) Is Doped with Gallium (Ga), Electrical Conductivity

question 82

Multiple Choice

When silicon (Si) is doped with gallium (Ga) , electrical conductivity increases because gallium

• A)has fewer valence electrons than silicon so holes are created in the valence band of silicon.
• B)has more valence electrons than silicon so electrons are added to the conduction band of silicon.
• C)causes electrons to be transferred from the valence band of silicon to the conduction band of silicon.
• D)causes electrons to be transferred from the conduction band of silicon to the valence band of silicon.
• E)is a better conductor of electricity than silicon.

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