K.C.S.E Physics Q & A - MODEL 2016PP2QN12

27/7/2020

K.C.S.E Physics Q & A - MODEL 2016PP2QN12

.When germanium crystal is doped with arsenic, it becomes an N-type semiconductor. Explain how this change occurs.
(Number of electrons in the outermost shell for germanium =4, arsenic =5)

answer

Arsenic shares four electrons with germanium leaving a free electron for conduction.

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K.C.S.E Physics Q & A - MODEL 2016PP2QN12

K.C.S.E Physics Q & A - MODEL 2016PP2QN12

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