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← ScienceWhich risk increases when carbon nanotubes form metallic bonds?
A)Significant ohmic heating develops✓
B)Electrical resistance sharply increases
C)Band gap suddenly becomes larger
D)Reduced mechanical tensile strength
💡 Explanation
The movement of many electrons causes significant ohmic heating because more electronic states become available near the Fermi level due to metallic bonding's increased electron delocalization. Therefore, ohmic losses increase, rather than resistance which decreases, for alternative semiconducting nanotube geometries under comparable conditions.
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