iodine-127 is the most stable isotope of iodine, with a relative atomic mass of approximately 126.90447. This value is determined by averaging the masses of all naturally occurring isotopes, weighted by their abundance. Iodine plays a crucial role in human health, especially for thyroid function. A deficiency can lead to goiter or hypothyroidism, so it's important to consume foods rich in iodine like seaweed, fish, and dairy products. The symbol "I" represents this essential element, which is also used in medical imaging and radiation therapy. Its unique properties make iodine indispensable in both nature and industry. Whether you're enjoying sushi with nori or taking supplements, remember that this little atom packs a big punch for your well-being! 🧠🐟