Question

Which of the following can conduct electricity in the solid state?

• A. Sucrose, $C_{12}{H}_{22}{O}_{11}\left(s\right)$
• B. Graphite, $C\left(s\right)$
• C. Sodium hydroxide, $NaOH\left(s\right)$
• D. Iron(III) chloride, $FeC{l}_3$(s)
• E. Iodine, $I_2$(s)

Answer 1

The correct option is B Graphite, $C\left(s\right)$

Graphite, C(s) can conduct electricity in the solid state.
Ferric chloride and sodium hydroxide are ionic solids that do not conduct electricity in the solid-state. They conduct electricity in a molten state or in an aqueous solution.
Iodine and sucrose are molecular solids that do not conduct electricity.
Graphite is a network solid and conducts electricity as it has delocalized molecular orbitals in which delocalized electrons are free to move.

Hence, option B is correct.