Why does solid iodine sublime easily on gentle heating while sodium chloride does not?

1. A Option A: I₂ molecules are held by weak London forces, whereas NaCl has strong ionic bonds
2. B Option B: Iodine has a higher lattice energy than NaCl
3. C Option C: NaCl is a molecular solid
4. D Option D: Iodine contains hydrogen bonds

Answer checked 11 October 2026 · How we write and check questions