Jiā diǎn shí yán kěyǐ yùfáng jiǎzhuàngxiàn jíbìng.
Iodized salt can prevent thyroid disease.
Tips
memory
碘 uses the stone radical 石 on the left (since it was classified among mineral-like substances) and the phonetic component 典 (diǎn). The character sounds just like 点 — remember: iodine is element number 53, and it's a key 'point' in nutrition.
