Concept:Molecular solids are characterized by discrete, independent molecules occupying the lattice points, held together by weak intermolecular forces.
Solution:- \( \text{S}_8 \) (Rhombic/Monoclinic Sulfur) exists as discrete 8-atom crown-shaped molecules.
- \( \text{I}_2 \) exists as discrete diatomic molecules.
- In both solid states, these neutral molecules are held together strictly by weak London dispersion forces, classifying both purely as molecular solids.
Why other options are incorrect:- A: While \( \text{CO}_2 \) is molecular, Carbon (\( \text{C} \) - diamond/graphite) is a giant covalent network solid.
- C: \( \text{NaCl} \) is an ionic solid; Carbon (\( \text{C} \)) is covalent.
- D: While \( \text{CO}_2 \) is molecular, \( \text{KCl} \) is an ionic solid.
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