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Q.
In $n$-type semiconductor, electrons are majority charge caries but it does not show any negative charge. The reason is
KCETKCET 2014Semiconductor Electronics: Materials Devices and Simple Circuits
Solution:
The $n$ -type semiconductor region has (negative) electrons as majority charge-carriers and an equal number of fixed positively-charged donor ions. Again, the material as a whole is neutral.
That is a reason atom is electrically neutral.