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e-lub [12.9K]
3 years ago
13

Silicon crystals are semiconductors. Which of the following is a correct reason for the increase in the conductivity of Si cryst

als when a small fraction of Si atoms are replaced with those of a different element?
A: P atoms introduce additional mobile negative charges.
B: P atoms introduce additional mobile positive charges.
C: Ge atoms have more electrons than Si atoms have.
D: Ge atoms are much smaller than Si atoms.
Chemistry
2 answers:
Flura [38]3 years ago
8 0

Answer:

c

Explanation:

it's correct I think and hope

melamori03 [73]3 years ago
3 0

Answer:

A is the right answer.. .............

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Answer:

The correct option is: (D) would function as both an acid and a base

Explanation:

A carbon skeleton bonded to a amino group as well as a carboxyl group, will behave as an acid in basic medium and base in acidic medium. This is because the carboxyl group present in the compound will release a proton in basic medium and the amino group will accept a proton in the acidic medium.

<u>Therefore, a carbon skeleton which is covalently bonded to a carboxyl and amino group will behave as both acid and base.</u>

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Answer: it’s b)

Explanation: that’s the only difference that is listed

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