Multiple Choice
White tin has an electrical conductivity that decreases with increasing temperature,and gray tin has an electrical conductivity that increases with increasing temperature.Therefore,white tin is classified as a(n) ________,and gray tin is classified as a(n) ________.
A) insulator,metal
B) metal,insulator
C) metal,semiconductor
D) semiconductor,metal
Correct Answer:

Verified
Correct Answer:
Verified
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