see eye to eye (with someone) - definition and synonyms. Close. 90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.
Iodine, in the form of iodide, is made into two radioactive isotopes that are commonly used in patients with thyroid diseases: I-123 (harmless to thyroid cells) and I-131 (destroys thyroid cells).odine, in the form of iodide, is made into two radioactive isotopes that are commonly used in patients with thyroid diseases: I-123 (harmless to thyroid cells) and I-131 (destroys thyroid cells).
A very popular element, carbon, also has isotopes. There are three isotopes of carbon: carbon-12, carbon-13 and carbon-14. The numbers that are after the carbon refer to the atomic mass. The most common and abundant isotope of carbon is carbon-12.here are different types of radioactive isotopes. Long-lived radioactive isotopes were created when the solar system was formed, and they've been present for billions of years. Examples of long-lived radioactive isotopes include potassium-40, rubidium-87 and uranium-238.