Which one of the following can conduct electricity in a solid state?
Correct answer: B. Graphite
- A. Diamond
- B. Graphite
- C. Nail
- D. Iodine
Explanation
Option A: diamond does not conduct electricityOption B: In graphite each carbon is bonded to three other carbon atoms hence leaving behind a free electron. Due to the presence of this one delocalised electron, graphite is a good conductor of electricity.Option C:fingernails do not conduct electricity and thus cannot be employed to enter information on a conductive touch screen. Users with long fingernails cannot easily touch the touch screen with their fingerOption D: Iodine is a nonmetal and therefore, it is an insulator that is, relatively, a poor conductor of electricity and heat.
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About Crystalline Solids
Crystalline solids contain particles arranged in a regular repeating lattice described by a unit cell. Their study includes coordination number, packing efficiency, density, anisotropy, cleavage, polymorphism and common crystal systems, along with ionic, molecular, covalent network and metallic crystals. Crystalline order differs from the random arrangement of amorphous solids.
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